Polished again and again, innovated again and again, tested again and again, in order to integrate fashion, comfort and technology. adidas Ultraboost 21 helps you feel the comfort of sports. The Ultraboost 21 is innovative with a Stretchweb grid bottom and Continental horse rubber in specific areas. The outsole is lightweight and flexible, and strives to adapt to a variety of climates and the ground to keep you moving with ease. Primeknit+RORGED upper design is not designed to bring elasticity where necessary. The heel has a pouch inside for a sock-like fit and prevents slipping heels. The full-palm BOOST technology midsole has a 6% increase in Boost material content compared to Ultraboost 20.
Polished again and again, innovated again and again, tested again and again, in order to integrate fashion, comfort and technology. adidas Ultraboost 21 helps you feel the comfort of sports. The Ultraboost 21 is innovative with a Stretchweb grid bottom and Continental horse rubber in specific areas. The outsole is lightweight and flexible, and strives to adapt to a variety of climates and the ground to keep you moving with ease. Primeknit+RORGED upper design is not designed to bring elasticity where necessary. The heel has a pouch inside for a sock-like fit and prevents slipping heels. The full-palm BOOST technology midsole has a 6% increase in Boost material content compared to Ultraboost 20.
Polished again and again, innovated again and again, tested again and again, in order to integrate fashion, comfort and technology. adidas Ultraboost 21 helps you feel the comfort of sports. The Ultraboost 21 is innovative with a Stretchweb grid bottom and Continental horse rubber in specific areas. The outsole is lightweight and flexible, and strives to adapt to a variety of climates and the ground to keep you moving with ease. Primeknit+RORGED upper design is not designed to bring elasticity where necessary. The heel has a pouch inside for a sock-like fit and prevents slipping heels. The full-palm BOOST technology midsole has a 6% increase in Boost material content compared to Ultraboost 20.
Polished again and again, innovated again and again, tested again and again, in order to integrate fashion, comfort and technology. adidas Ultraboost 21 helps you feel the comfort of sports. The Ultraboost 21 is innovative with a Stretchweb grid bottom and Continental horse rubber in specific areas. The outsole is lightweight and flexible, and strives to adapt to a variety of climates and the ground to keep you moving with ease. Primeknit+RORGED upper design is not designed to bring elasticity where necessary. The heel has a pouch inside for a sock-like fit and prevents slipping heels. The full-palm BOOST technology midsole has a 6% increase in Boost material content compared to Ultraboost 20.
Last updated at 04/20/2026 05:07:33
adidas UltraBoost 21 'Grey Screaming Orange' | Men's Size 10.5
Delivery between 21–28 Apr $25
adidas Ultra Boost 21 Dash Grey Screaming Orange
Delivery $34.95
originally posted on Academy Sports + Outdoors
I have very high arches, plantar fasciitis and gets shin splints. I have tried every pair of “high arch” podiatrist recommended tennis shoes. These are the best! Better for me than ASICS Kayano, Brooks Ghost and Glycerin, and Nike Air Pegasus (and others). I’m soooo glad I found these and on sale! The arch is awesome and the tie box is wide.
originally posted on sigmasports.com
These shoes are extremely comfortable. Not only are they good to run in, they are extremely comfortable for just wearing on a regular commute as well. Highly recommend for anyone who walks a lot or runs on hard surfaces like roads or sidewalks.
originally posted on Academy Sports + Outdoors
I got a great deal on these! I've been in love with the '19 and '20 model, and these aren't quite the same fit. However, I wear them for my workouts almost everyday and they do the trick.
adidas UltraBoost 21 'Grey Screaming Orange' | Men's Size 10.5
Delivery between 21–28 Apr $25
adidas Ultra Boost 21 Dash Grey Screaming Orange
Delivery $34.95
I have very high arches, plantar fasciitis and gets shin splints. I have tried every pair of “high arch” podiatrist recommended tennis shoes. These are the best! Better for me than ASICS Kayano, Brooks Ghost and Glycerin, and Nike Air Pegasus (and others). I’m soooo glad I found these and on sale! The arch is awesome and the tie box is wide.
These shoes are extremely comfortable. Not only are they good to run in, they are extremely comfortable for just wearing on a regular commute as well. Highly recommend for anyone who walks a lot or runs on hard surfaces like roads or sidewalks.
I got a great deal on these! I've been in love with the '19 and '20 model, and these aren't quite the same fit. However, I wear them for my workouts almost everyday and they do the trick.
I really liked the Ultraboost 20s and bought 2 pairs of the Ultraboost 21 to add in my rotation. I work out 4-5 days a week, doing cardio and weights. And these feel really good on my feet. I am not an avid runner, but as advertised, the additional boost feels more responsive and more cushioned. If you liked the Ultraboost 20s, you'll like the upgrade on the Ultraboost 21s. I am a heavy set guy, I've lost over 60 lbs in the last year, and have put my Ultraboosts through the test...
This sneaker is super comfortable. You feel a supportive sole in the shoe while you run. It stretches to fit your foot and has a snug secure fit.
Bought two pair of trainers ASICS gel Kayano which fit perfectly but had to return the Adidas ultra boost as were a bit tight .Sent back and ordered a half size up and they arrived four days later so very happy .
Adidas Ultraboost 20's are still my favorite shoe. But I love how the 21's have upgraded the support in the sole, and have tilted the shoe forward a bit to really propel you forward.
All out red looks exteemely sharp! The extended boost sole looks sharp and provides additional stability. Upper is well made with very little evidence of stich/glue lines. Can wear casually or for running but sole is not flat or firm enough for most gym leg-day exercises. We ordered a full size down as the shoe runs noticably large.
Nice looking shoe, but the plastic lacing cinch rubs the top of the foot. Not a good shoe for my wife - needs more comfort.
I have always loved the adidas UltraBoost shoes so were very excited to try the new 21s out. I was not disappointed! Super responsive and super comfy
