{"id":8159,"date":"2022-01-17T16:45:35","date_gmt":"2022-01-17T16:45:35","guid":{"rendered":"https:\/\/runnerslab.com\/?page_id=8159"},"modified":"2022-07-24T16:46:29","modified_gmt":"2022-07-24T16:46:29","slug":"adidas-ultraboost-21-review","status":"publish","type":"post","link":"https:\/\/runnerslab.com\/adidas-ultraboost-21-review\/","title":{"rendered":"Adidas UltraBoost 21"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><picture><source srcset=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-1024x671.webp 1024w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-300x197.webp 300w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-768x503.webp 768w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-1536x1006.webp 1536w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-2048x1341.webp 2048w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-229x150.webp 229w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-100x66.webp 100w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-336x220.webp 336w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-534x350.webp 534w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-788x516.webp 788w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-269x176.webp 269w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-324x212.webp 324w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21.webp 1000w\" sizes=\"(max-width: 768px) 100vw, 768px\" type=\"image\/webp\"><img src=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-1024x671.jpg\" height=\"503\" width=\"768\" srcset=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-1024x671.jpg 1024w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-300x197.jpg 300w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-768x503.jpg 768w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-1536x1006.jpg 1536w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-2048x1341.jpg 2048w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-229x150.jpg 229w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-100x66.jpg 100w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-336x220.jpg 336w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-534x350.jpg 534w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-788x516.jpg 788w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-269x176.jpg 269w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21-324x212.jpg 324w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21.jpg 1000w\" sizes=\"(max-width: 768px) 100vw, 768px\" class=\"wp-image-4340 sp-no-webp\" alt=\"Adidas UltraBoost 21\" loading=\"lazy\" decoding=\"async\"  > <\/picture><\/figure><\/div>\n\n\n<style>.wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98, .wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98[data-kb-block=\"kb-adv-heading_171fd8-98\"]{margin-top:-30px;text-align:center;font-size:50px;line-height:55px;font-style:normal;}.wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98 mark, .wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98[data-kb-block=\"kb-adv-heading_171fd8-98\"] mark{font-style:normal;color:#f76a0c;padding-top:0px;padding-right:0px;padding-bottom:0px;padding-left:0px;}@media all and (max-width: 767px){.wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98, .wp-block-kadence-advancedheading.kt-adv-heading_171fd8-98[data-kb-block=\"kb-adv-heading_171fd8-98\"]{margin-top:-30px;font-size:35px;line-height:40px;}}<\/style>\n<h1 class=\"kt-adv-heading_171fd8-98 wp-block-kadence-advancedheading\" data-kb-block=\"kb-adv-heading_171fd8-98\"><strong>Adidas UltraBoost 21 Review Analysis (2021)<\/strong><\/h1>\n\n\n\n<p style=\"font-size:15px\">Last update: May 2024<\/p>\n\n\n\n<p>Half sneaker, half running shoe, the Adidas UltraBoost 21 is a sleek and comfortable option for your daily runs.<\/p>\n\n\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-consensus\">The Consensus<\/h2>\n\n\n<style scoped>.gc-review-box{padding:18px;margin-bottom:25px;background:#fff;box-shadow:0 2px 20px rgba(0,0,0,.08);overflow:hidden}@media only screen and (min-width:768px){.gc-review-box{padding:30px}}.gc-review-box .review-top{overflow:hidden;float:none;width:100%}.gc-review-box .overall-score{width:100px;margin:0 20px 10px 0;float:left;background:#e43917;text-align:center}.gc-review-box .overall{display:block;padding:8px 0;font-size:52px;line-height:1;color:#fff}.gc-review-box .overall-text{display:block;padding:6px 0;font-weight:700;font-size:11px;text-transform:uppercase;background:#111;color:#fff}.gc-review-box .review-header{display:block;margin-bottom:9px;font-size:26px;font-weight:700;line-height:32px}.gc-review-box .review-text p{margin:0}.gc-review-box .review-criteria{margin-top:20px;padding:40px 0 0 0;border-top:1px dashed #eee;border-bottom:1px dashed #eee;transition:.4s linear;transition-property:width,background-color}.gc-review-box .rate-bar{position:relative;display:block;width:100%;margin-bottom:34px;background:#ddd;height:14px;transition:.4s linear;transition-property:width,background-color;border-radius:5px}.gc-review-box .rate-bar-title{position:absolute;top:-21px;left:0;font-size:14px}.gc-review-box .rate-bar-title span{display:block;min-width:140px;height:18px;line-height:18px}.gc-review-box .rate-bar-title span[data-rich-text-placeholder]{position:absolute;top:0;left:0}.gc-review-box .rate-bar-bar{width:0;height:14px;background:#e43917;border-radius:5px}.gc-review-box .rate-bar-percent{position:absolute;top:-21px;right:0;height:18px;font-size:14px;font-weight:700;line-height:18px}.gc-cons-pros{overflow:hidden;margin-top:20px}.gc-cons-pros__col{width:100%;float:none;margin-right:0;margin-bottom:20px}@media only screen and (min-width:768px){.gc-cons-pros__col{position:relative;float:left;width:48%;margin-right:4%;margin-bottom:5px}}.gc-cons-pros__col:last-of-type{margin-bottom:0}@media only screen and (min-width:768px){.gc-cons-pros__col:last-of-type{margin-right:0;clear:right}}@media only screen and (min-width:768px){.gc-cons-pros__col--full{width:100%;margin-right:0;margin-bottom:0;float:none}}.gc-cons-pros__title{margin:0 0 15px 0;font-size:19px;font-weight:700;line-height:1.2}.gc-cons-pros__title--pros{color:#58c649}.gc-cons-pros__title--cons{color:#f24f4f}.gc-cons-pros__list{margin:0 0 15px 0!important;padding:0!important;list-style:none!important}@media only screen and (min-width:768px){.gc-cons-pros__list{margin:0}}.gc-cons-pros__item{list-style:none !important;margin:0 0 12px 0!important;position:relative;padding-right:30px;font-size:16px;line-height:20px}.gc-pros__item svg{height:20px;width:20px;margin:0 10px 6px 0;vertical-align:text-top}.gc-cons__item svg{height:16px;width:16px;margin:0 10px 6px 0;vertical-align:middle}<\/style><div class=\"gc-review-box\"><div class=\"gc-review-box__wrapper\"><div class=\"review-top\"><div class=\"overall-score\" style=\"background-color:#E43917;\"><span class=\"overall\">8.5<\/span><span class=\"overall-text\">Overall score<\/span><\/div><div class=\"review-text\"><span class=\"review-header\">Stylish and comfortable running shoe but too heavy and not responsive enough<\/span><div>The Adidas UltraBoost is much anticipated every year but eventually leads to plenty of mixed reviews. The UB21 is no exception and proposes the same formula: a model halfway between a sneaker and a running shoe that tries to combine style and performance.<br><br>The sleek design is an achievement on its own and will please runners who like good-looking shoes on their feet. The Primeknit upper and its bootie conception offer great comfort and impeccable foot lockdown, according to the testers. It&#8217;s both breathable and stretchy for a precise and adaptive fit. Also, the Primeblue material uses 50% of recycled plastic from the oceans. The UB21 also marks the midfoot plastic cage&#8217;s return that many runners decried in the past on previous versions. However, luckily it&#8217;s barely noticeable this time.<br><br>Then, the cushioning shifts gear with a heel stack height of 31 mm instead of 27 mm the year before. Adidas announces 6% more Boost, and it shows: the small white TPU granules give a massive sole, especially in the heel area. Another significant change, the Linear Energy Push plastic plate, replaces the Torsion System of the previous models. It gives structure to the platform for better stability and a snappier toe-off. However, in practice, testers found the cushioning firm and clunky, with little bounce, although the shoe provides a stable ride. The weight doesn&#8217;t help with 12.3 oz (348 g) (even more than the previous model), limiting its speed ambitions.<br><br>Finally, the outsole also boasts a new design and succumbs to the exposed foam trend (only in the center) without limiting durability or grip, both of which are very good.<br><br>In summary, unless you&#8217;re a fan of the UltraBoost collection, there&#8217;s little reason to opt for the UB21 other than its comfortable lockdown, good shock absorption, and sleek design. Otherwise, the Ultraboost is too heavy and too stiff for an enjoyable ride, even for daily runs.<\/div><\/div><\/div><div class=\"review-criteria\"><div class=\"rate-bar clearfix\"><div class=\"rate-bar-title\"><span>Comfort<\/span><\/div><div class=\"rate-bar-bar\" style=\"background-color:#E43917;width: 85%\"><\/div><div class=\"rate-bar-percent\">8.5<\/div><\/div><div class=\"rate-bar clearfix\"><div class=\"rate-bar-title\"><span>Durability<\/span><\/div><div class=\"rate-bar-bar\" style=\"background-color:#E43917;width: 90%\"><\/div><div class=\"rate-bar-percent\">9<\/div><\/div><div class=\"rate-bar clearfix\"><div class=\"rate-bar-title\"><span>Value for money<\/span><\/div><div class=\"rate-bar-bar\" style=\"background-color:#E43917;width: 75%\"><\/div><div class=\"rate-bar-percent\">7.5<\/div><\/div><div class=\"rate-bar clearfix\"><div class=\"rate-bar-title\"><span>Design<\/span><\/div><div class=\"rate-bar-bar\" style=\"background-color:#E43917;width: 90%\"><\/div><div class=\"rate-bar-percent\">9<\/div><\/div><\/div><div class=\"gc-cons-pros\"><div class=\"gc-cons-pros__col\"><div class=\"gc-cons-pros__title gc-cons-pros__title--pros\" style=\"color:\">PROS<\/div><ul class=\"gc-cons-pros__list gc-cons-pros__list--pros\"><li class=\"gc-cons-pros__item gc-pros__item\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" x=\"0px\" y=\"0px\" width=\"24\" height=\"24\" viewBox=\"0 0 512 512\" style=\"fill:#58c649\"><ellipse cx=\"256\" cy=\"256\" rx=\"256\" ry=\"255.832\"\/><polygon points=\"235.472,392.08 114.432,297.784 148.848,253.616 223.176,311.52 345.848,134.504 \n\t\t\t\t\t\t\t\t\t391.88,166.392\" style=\"fill:white\"\/><\/svg> Great knit upper that offers impeccable lockdown<\/li><li class=\"gc-cons-pros__item gc-pros__item\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" x=\"0px\" y=\"0px\" width=\"24\" height=\"24\" viewBox=\"0 0 512 512\" style=\"fill:#58c649\"><ellipse cx=\"256\" cy=\"256\" rx=\"256\" ry=\"255.832\"\/><polygon points=\"235.472,392.08 114.432,297.784 148.848,253.616 223.176,311.52 345.848,134.504 \n\t\t\t\t\t\t\t\t\t391.88,166.392\" style=\"fill:white\"\/><\/svg> Good shock absorption<\/li><li class=\"gc-cons-pros__item gc-pros__item\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" x=\"0px\" y=\"0px\" width=\"24\" height=\"24\" viewBox=\"0 0 512 512\" style=\"fill:#58c649\"><ellipse cx=\"256\" cy=\"256\" rx=\"256\" ry=\"255.832\"\/><polygon points=\"235.472,392.08 114.432,297.784 148.848,253.616 223.176,311.52 345.848,134.504 \n\t\t\t\t\t\t\t\t\t391.88,166.392\" style=\"fill:white\"\/><\/svg> Stable run<\/li><li class=\"gc-cons-pros__item gc-pros__item\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" x=\"0px\" y=\"0px\" width=\"24\" height=\"24\" viewBox=\"0 0 512 512\" style=\"fill:#58c649\"><ellipse cx=\"256\" cy=\"256\" rx=\"256\" ry=\"255.832\"\/><polygon points=\"235.472,392.08 114.432,297.784 148.848,253.616 223.176,311.52 345.848,134.504 \n\t\t\t\t\t\t\t\t\t391.88,166.392\" style=\"fill:white\"\/><\/svg> Durable and grippy outsole<\/li><\/ul><\/div><div class=\"gc-cons-pros__col\"><div class=\"gc-cons-pros__title gc-cons-pros__title--cons\" style=\"color:\">CONS<\/div><ul class=\"gc-cons-pros__list gc-cons-pros__list--cons\"><li class=\"gc-cons-pros__item gc-cons__item\"><svg height=\"20px\" viewBox=\"0 0 365.71733 365\" width=\"20px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g fill=\"#f44336\"><path d=\"m356.339844 296.347656-286.613282-286.613281c-12.5-12.5-32.765624-12.5-45.246093 0l-15.105469 15.082031c-12.5 12.503906-12.5 32.769532 0 45.25l286.613281 286.613282c12.503907 12.5 32.769531 12.5 45.25 0l15.082031-15.082032c12.523438-12.480468 12.523438-32.75.019532-45.25zm0 0\"\/><path d=\"m295.988281 9.734375-286.613281 286.613281c-12.5 12.5-12.5 32.769532 0 45.25l15.082031 15.082032c12.503907 12.5 32.769531 12.5 45.25 0l286.632813-286.59375c12.503906-12.5 12.503906-32.765626 0-45.246094l-15.082032-15.082032c-12.5-12.523437-32.765624-12.523437-45.269531-.023437zm0 0\"\/><\/g><\/svg> Heavyweight<\/li><li class=\"gc-cons-pros__item gc-cons__item\"><svg height=\"20px\" viewBox=\"0 0 365.71733 365\" width=\"20px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g fill=\"#f44336\"><path d=\"m356.339844 296.347656-286.613282-286.613281c-12.5-12.5-32.765624-12.5-45.246093 0l-15.105469 15.082031c-12.5 12.503906-12.5 32.769532 0 45.25l286.613281 286.613282c12.503907 12.5 32.769531 12.5 45.25 0l15.082031-15.082032c12.523438-12.480468 12.523438-32.75.019532-45.25zm0 0\"\/><path d=\"m295.988281 9.734375-286.613281 286.613281c-12.5 12.5-12.5 32.769532 0 45.25l15.082031 15.082032c12.503907 12.5 32.769531 12.5 45.25 0l286.632813-286.59375c12.503906-12.5 12.503906-32.765626 0-45.246094l-15.082032-15.082032c-12.5-12.523437-32.765624-12.523437-45.269531-.023437zm0 0\"\/><\/g><\/svg> Expensive shoe<\/li><li class=\"gc-cons-pros__item gc-cons__item\"><svg height=\"20px\" viewBox=\"0 0 365.71733 365\" width=\"20px\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><g fill=\"#f44336\"><path d=\"m356.339844 296.347656-286.613282-286.613281c-12.5-12.5-32.765624-12.5-45.246093 0l-15.105469 15.082031c-12.5 12.503906-12.5 32.769532 0 45.25l286.613281 286.613282c12.503907 12.5 32.769531 12.5 45.25 0l15.082031-15.082032c12.523438-12.480468 12.523438-32.75.019532-45.25zm0 0\"\/><path d=\"m295.988281 9.734375-286.613281 286.613281c-12.5 12.5-12.5 32.769532 0 45.25l15.082031 15.082032c12.503907 12.5 32.769531 12.5 45.25 0l286.632813-286.59375c12.503906-12.5 12.503906-32.765626 0-45.246094l-15.082032-15.082032c-12.5-12.523437-32.765624-12.523437-45.269531-.023437zm0 0\"\/><\/g><\/svg> Firm cushioning that lacks responsiveness<\/li><\/ul><\/div><\/div><\/div><\/div>\n\n<style>.wp-block-kadence-advancedbtn.kt-btns_038630-d8, .site .entry-content .wp-block-kadence-advancedbtn.kt-btns_038630-d8, .wp-block-kadence-advancedbtn.kb-btns_038630-d8, .site .entry-content .wp-block-kadence-advancedbtn.kb-btns_038630-d8{margin-top:5%;margin-bottom:5%;}.wp-block-kadence-advancedbtn.kb-btns_038630-d8{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns_038630-d8 .kt-button{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Oxygen-Sans,Ubuntu,Cantarell,\"Helvetica Neue\",sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\";font-weight:600;font-style:normal;}.kt-btns_038630-d8 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button{width:375px;color:#ffffff;font-size:25px;background:#cf2e2e;border-color:#cf2e2e;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button .kt-btn-svg-icon{font-size:36px;}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn.kt-btns_038630-d8, .site .entry-content .wp-block-kadence-advancedbtn.kt-btns_038630-d8, .wp-block-kadence-advancedbtn.kb-btns_038630-d8, .site .entry-content .wp-block-kadence-advancedbtn.kb-btns_038630-d8{margin-top:10%;margin-bottom:10%;}.wp-block-kadence-advancedbtn.kt-btns_038630-d8 .kt-btn-wrap-0 .kt-button{margin-top:5px;margin-bottom:5px;}}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kt-btn-align-center kt-btn-tablet-align-inherit kt-btn-mobile-align-inherit kt-btns-wrap kt-btns_038630-d8\"><div class=\"kt-btn-wrap kt-btn-wrap-0\"><a class=\"kt-button button kt-btn-0-action kt-btn-size-large kt-btn-style-basic kt-btn-svg-show-always kt-btn-has-text-true kt-btn-has-svg-true\" href=\"https:\/\/runnerslab.com\/go\/adidas-ultraboost-21\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" style=\"border-radius:40px;border-width:0px\"><span class=\"kt-btn-inner-text\">Click for Best Price<\/span><div style=\"display:inline-flex;justify-content:center;align-items:center\" class=\"kt-btn-svg-icon kt-btn-svg-icon-fe_arrowRight kt-btn-side-right\"><svg style=\"display:inline-block;vertical-align:middle\" viewbox=\"0 0 24 24\" height=\"1em\" width=\"1em\" fill=\"none\" stroke=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"><\/line><polyline points=\"12 5 19 12 12 19\"><\/polyline><\/svg><\/div><\/a><\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"technologies\">Technologies<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"outsole\">Outsole<\/h3>\n\n\n\n<ul><li>The outsole of the Adidas Ultra Boost 21 uses&nbsp;<strong>Stretchweb Continental<\/strong>: a resistant rubber with a unique tread pattern to optimize durability and traction on city surfaces.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large is-resized\"><picture><source srcset=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-1024x722.webp 1024w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-300x212.webp 300w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-767x541.webp 767w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-1536x1083.webp 1536w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-2048x1444.webp 2048w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-213x150.webp 213w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-100x71.webp 100w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-496x350.webp 496w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-788x555.webp 788w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-269x190.webp 269w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-323x228.webp 323w,https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole.webp 950w\" sizes=\"(max-width: 768px) 100vw, 768px\" type=\"image\/webp\"><img src=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-1024x722.jpg\" height=\"542\" width=\"768\" srcset=\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-1024x722.jpg 1024w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-300x212.jpg 300w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-767x541.jpg 767w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-1536x1083.jpg 1536w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-2048x1444.jpg 2048w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-213x150.jpg 213w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-100x71.jpg 100w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-496x350.jpg 496w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-788x555.jpg 788w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-269x190.jpg 269w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole-323x228.jpg 323w, https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_UltraBoost_21_sole.jpg 950w\" sizes=\"(max-width: 768px) 100vw, 768px\" class=\"wp-image-4341 sp-no-webp\" alt=\"Adidas UltraBoost 21 continental rubber outsole\" loading=\"lazy\" decoding=\"async\"  > <\/picture><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"midsole\">Midsole<\/h3>\n\n\n\n<ul><li><strong>Boost<\/strong>&nbsp;equips this new UB model. Adidas\u2019s leading midsole technology consists of thousands of little balls in thermoplastic polyurethane fused to absorb shocks and improve the bounce.<\/li><li>Also,&nbsp;<strong>the Linear Energy Push<\/strong>&nbsp;is a torsion system that increases the structure of the platform to maximize the energy return. According to Adidas, this technology improves forefoot rigidity by 15% for a snappier toe-off.<\/li><li>The&nbsp;<strong>removable insole<\/strong>&nbsp;improves the comfort inside the shoe and helps with regulating humidity.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"upper\">Upper<\/h3>\n\n\n\n<ul><li>The Adidas UltraBoost 21\u2019s upper features&nbsp;<strong>Primeknit<\/strong>: a stretchy, lightweight, breathable, and smooth-looking engineered knit that comfortably wraps around the athlete\u2019s foot for a fitted and comfortable foot lockdown.<\/li><li><strong>Primeblue<\/strong>&nbsp;is an engineered textile composed of at least 50% of recycled Parley Ocean Plastic to reduce the carbon footprint of the shoe.<\/li><li>The&nbsp;<strong>bootie construction<\/strong>&nbsp;reduces irritations and makes it easy to put on and take off your shoes.<\/li><li>The&nbsp;<strong>external heel counter<\/strong>&nbsp;keeps the foot secured in the shoe to prevent slippage<\/li><\/ul>\n\n\n<style>.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21, .site .entry-content .wp-block-kadence-advancedbtn.kt-btns_f3f32c-21, .wp-block-kadence-advancedbtn.kb-btns_f3f32c-21, .site .entry-content .wp-block-kadence-advancedbtn.kb-btns_f3f32c-21{margin-top:5%;margin-bottom:5%;}.wp-block-kadence-advancedbtn.kb-btns_f3f32c-21{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns_f3f32c-21 .kt-button{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Oxygen-Sans,Ubuntu,Cantarell,\"Helvetica Neue\",sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\";font-weight:600;font-style:normal;}.kt-btns_f3f32c-21 .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button{width:375px;color:#ffffff;font-size:25px;background:#cf2e2e;border-color:#cf2e2e;}.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button:focus{background:#444444;}.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button .kt-btn-svg-icon{font-size:36px;}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn.kt-btns_f3f32c-21 .kt-btn-wrap-0 .kt-button{margin-top:10px;margin-bottom:10px;}}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kt-btn-align-center kt-btn-tablet-align-inherit kt-btn-mobile-align-inherit kt-btns-wrap kt-btns_f3f32c-21\"><div class=\"kt-btn-wrap kt-btn-wrap-0\"><a class=\"kt-button button kt-btn-0-action kt-btn-size-large kt-btn-style-basic kt-btn-svg-show-always kt-btn-has-text-true kt-btn-has-svg-true\" href=\"https:\/\/runnerslab.com\/go\/adidas-ultraboost-21\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" style=\"border-radius:40px;border-width:0px\"><span class=\"kt-btn-inner-text\">Click for Best Price<\/span><div style=\"display:inline-flex;justify-content:center;align-items:center\" class=\"kt-btn-svg-icon kt-btn-svg-icon-fe_arrowRight kt-btn-side-right\"><svg style=\"display:inline-block;vertical-align:middle\" viewbox=\"0 0 24 24\" height=\"1em\" width=\"1em\" fill=\"none\" stroke=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"><\/line><polyline points=\"12 5 19 12 12 19\"><\/polyline><\/svg><\/div><\/a><\/div><\/div>\n\n\n\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"facts\" style=\"font-size:28px\">Facts<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"technical-specs\" style=\"font-size:24px\">Technical Specs<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table class=\"has-fixed-layout\"><tbody><tr><td>Terrain<\/td><td>Road<\/td><\/tr><tr><td>Pronation type<\/td><td>Neutral<\/td><\/tr><tr><td>Drop<\/td><td>10 mm<\/td><\/tr><tr><td>Heel stack height<\/td><td>31 mm<\/td><\/tr><tr><td>Forefoot stack height<\/td><td>21 mm<\/td><\/tr><tr><td>Features<\/td><td>Recycled materials<\/td><\/tr><tr><td>Weight (men)<\/td><td>348 g\/12.3 oz<\/td><\/tr><tr><td>Weight (women)<\/td><td>316 g\/11.1 oz<\/td><\/tr><tr><td>Release year<\/td><td>2021<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"cushioning\" style=\"font-size:24px\">Cushioning<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Softness (1-5)<\/td><td>2 \u2013 Firm<\/td><\/tr><tr><td>Bounce (1-5)<\/td><td>2 \u2013 Low<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"technologies-1\" style=\"font-size:24px\">Technologies<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td>Outsole<\/td><td>Stretchweb Continental<\/td><\/tr><tr><td>Midsole<\/td><td>Boost, Linear Energy Push, removable insole<\/td><\/tr><tr><td>Upper<\/td><td>Primeknit, Primeblue, bootie construction, external heel counter<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"use\" style=\"font-size:24px\">Use<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><tbody><tr><td>Speed<\/td><td>Slow, moderate<\/td><\/tr><tr><td>Distance<\/td><td>Mid, long, 10k, half marathon <\/td><\/tr><tr><td>Workout<\/td><td>Daily runs<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>Reference: <a href=\"https:\/\/www.adidas.com\/us\/ultraboost-21-shoes\/S23870.html\" target=\"_blank\" rel=\"noreferrer noopener\">Adidas&#8217; official website<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"comparisons-adidas-ultraboost-21-vs\" style=\"font-size:28px\">Comparisons &#8211; Adidas UltraBoost 21 vs.:<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"adidas-ultraboost-20\">Adidas UltraBoost 20<\/h3>\n\n\n\n<p>The UB21 has more cushioning with its higher stack height featuring more BOOST. However, it makes it heavier, and it weighs 0.7 oz\/20 g more than the UB20. For the rest, the cushioning is similar. Good to note: the UltraBoost 21 is less narrow, which was one of the main negative points of the previous model.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"frequently-asked-questions-faqs\" style=\"font-size:28px\">Frequently Asked Questions (FAQs)<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1631560434695\"><strong class=\"schema-faq-question\">Is this model true to size?<\/strong> <p class=\"schema-faq-answer\">This shoe dropped just recently, and we don&#8217;t have enough feedback from runners yet to give a definite answer. We will update this section as soon as we have more information. However, overall, Adidas running shoes tend to fit true to size. In any case, if this is your first pair of Adidas, a trip to the store is always better.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1631560502823\"><strong class=\"schema-faq-question\">I overpronate. Can I run in the Adidas UltraBoost 21?<\/strong> <p class=\"schema-faq-answer\">Yes, this model should be suitable for everyone. Indeed, it&#8217;s a neutral running shoe. Therefore, it aims to suit all runners independently from their pronation type. It doesn&#8217;t have stability technologies to correct the stride and reduce overpronation. Anyway, let&#8217;s note that shoe models for overpronation are no more effective than neutral shoes to prevent injury. Accordingly, we advise that you choose your running shoes according to their comfort, the most critical criterion.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1631560569313\"><strong class=\"schema-faq-question\">Is this shoe recommended if I&#8217;m a heavy athlete?<\/strong> <p class=\"schema-faq-answer\">Yes, this model should be just fine as it has a generous stack height with 31 mm under the heel and 21 mm under the forefoot, which is sufficient for the vast majority of runners.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1642021896422\"><strong class=\"schema-faq-question\">Is this model adapted to run a marathon?<\/strong> <p class=\"schema-faq-answer\">Yes, this Adidas running shoe is very well suited for different workouts and distances. As far as the marathon is concerned, it depends above all on how you feel. If you can have multiple long training sessions (12 mi\/20 km and beyond) without pain or discomfort, then it should be a good choice for your event.<\/p> <\/div> <\/div>\n\n\n<style>.wp-block-kadence-advancedbtn.kt-btns_052b18-3b, .site .entry-content .wp-block-kadence-advancedbtn.kt-btns_052b18-3b, .wp-block-kadence-advancedbtn.kb-btns_052b18-3b, .site .entry-content .wp-block-kadence-advancedbtn.kb-btns_052b18-3b{margin-top:5%;margin-bottom:5%;}.wp-block-kadence-advancedbtn.kb-btns_052b18-3b{gap:var(--global-kb-gap-xs, 0.5rem );justify-content:center;align-items:center;}.kt-btns_052b18-3b .kt-button{font-family:-apple-system,BlinkMacSystemFont,\"Segoe UI\",Roboto,Oxygen-Sans,Ubuntu,Cantarell,\"Helvetica Neue\",sans-serif, \"Apple Color Emoji\", \"Segoe UI Emoji\", \"Segoe UI Symbol\";font-weight:600;font-style:normal;}.kt-btns_052b18-3b .kt-btn-wrap-0{margin-right:5px;}.wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button{width:375px;color:#ffffff;font-size:25px;background:#cf2e2e;border-color:#cf2e2e;}.wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button:focus{color:#ffffff;border-color:#444444;}.wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button::before{display:none;}.wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button:hover, .wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button:focus{background:#444444;}.wp-block-kadence-advancedbtn.kt-btns_052b18-3b .kt-btn-wrap-0 .kt-button .kt-btn-svg-icon{font-size:36px;}@media all and (max-width: 767px){.wp-block-kadence-advancedbtn.kt-btns_052b18-3b, .site .entry-content .wp-block-kadence-advancedbtn.kt-btns_052b18-3b, .wp-block-kadence-advancedbtn.kb-btns_052b18-3b, .site .entry-content .wp-block-kadence-advancedbtn.kb-btns_052b18-3b{margin-top:10%;margin-bottom:10%;}}<\/style>\n<div class=\"wp-block-kadence-advancedbtn kt-btn-align-center kt-btn-tablet-align-inherit kt-btn-mobile-align-inherit kt-btns-wrap kt-btns_052b18-3b\"><div class=\"kt-btn-wrap kt-btn-wrap-0\"><a class=\"kt-button button kt-btn-0-action kt-btn-size-large kt-btn-style-basic kt-btn-svg-show-always kt-btn-has-text-true kt-btn-has-svg-true\" href=\"https:\/\/runnerslab.com\/go\/adidas-ultraboost-21\/\" target=\"_blank\" rel=\"noreferrer noopener nofollow\" style=\"border-radius:40px;border-width:0px\"><span class=\"kt-btn-inner-text\">Click for Best Price<\/span><div style=\"display:inline-flex;justify-content:center;align-items:center\" class=\"kt-btn-svg-icon kt-btn-svg-icon-fe_arrowRight kt-btn-side-right\"><svg style=\"display:inline-block;vertical-align:middle\" viewbox=\"0 0 24 24\" height=\"1em\" width=\"1em\" fill=\"none\" stroke=\"currentColor\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" stroke-width=\"2\" stroke-linecap=\"round\" stroke-linejoin=\"round\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"><\/line><polyline points=\"12 5 19 12 12 19\"><\/polyline><\/svg><\/div><\/a><\/div><\/div>\n\n\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<script type=\"application\/ld+json\">\n{\n    \"@context\":\"https:\/\/schema.org\/\",\n    \"@type\":\"Product\",\n    \"brand\":{\n        \"@type\":\"Brand\",\n        \"name\":\"Adidas\",\n        \"sameAs\":\"https:\/\/www.adidas.com\/\"\n    },\n    \"name\":\"Adidas UltraBoost 21\",\n    \"sku\":\"S23870\",\n    \"gtin8\":\"S23870\",\n    \"image\":\"https:\/\/runnerslab.com\/wp-content\/uploads\/2021\/02\/Adidas_Ultra_Boost_21.jpg\",\n    \"url\":\"https:\/\/runnerslab.com\/adidas-ultraboost-21-review\/\",\n    \"description\":\"Half sneaker, half running shoe, the Adidas UltraBoost 21 is a sleek and comfortable option for your daily runs. Should you get it? We've analyzed many reviews from expert and amateur athletes to help you decide.\",\n    \"sameAs\":[\n        \"https:\/\/www.adidas.com\/us\/ultraboost-21-shoes\/S23870.html\"\n    ],\n    \"review\":{\n        \"@type\":\"Review\",\n        \"datePublished\":\"2021-02-05\",\n        \"url\":\"https:\/\/runnerslab.com\/adidas-ultraboost-21-review\/\",\n        \"inLanguage\":\"en-US\",\n        \"description\":\"Half sneaker, half running shoe, the Adidas UltraBoost 21 is a sleek and comfortable option for your daily runs. Should you get it? We've analyzed many reviews from expert and amateur athletes to help you decide.\",\n        \"publisher\":{\n            \"@type\":\"Organization\",\n            \"name\":\"Runner's Lab\",\n            \"url\":\"https:\/\/runnerslab.com\",\n            \"logo\":{\n                \"@type\":\"ImageObject\",\n                \"url\":\"https:\/\/runnerslab.com\/wp-content\/uploads\/2020\/09\/runnerslab_logo.png\"\n            }\n        },\n        \"reviewRating\":{\n            \"@type\":\"Rating\",\n            \"ratingValue\":\"8.5\",\n            \"bestRating\":\"10\",\n            \"worstRating\":\"0\"\n        },\n        \"author\":{\n            \"@type\":\"Person\",\n            \"name\":\"Kevin Le Gall\",\n            \"sameAs\":\"https:\/\/runnerslab.com\/author\/kevinlegall\/\"\n        }\n    }\n}\n<script>\n","protected":false},"excerpt":{"rendered":"<p>Half sneaker, half running shoe, the Adidas UltraBoost 21 is a sleek and comfortable option for your daily runs.<\/p>\n","protected":false},"author":9,"featured_media":4340,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","footnotes":""},"categories":[774],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Adidas UltraBoost 21 Review (2021): Should You Get It?<\/title>\n<meta name=\"description\" content=\"Discover the OVERALL SCORE of the Adidas UltraBoost 21 based on our Review Analysis. 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