Prototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
Prototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
Prototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
Prototype after prototype. Innovation after innovation. Testing after testing. Meet us in the hot pursuit of the pinnacle harmonization of weight, cushioning, and responsiveness. Ultraboost 21. Say hello to incredible energy return.
Last updated at 01/26/2026 00:44:35
originally posted on stockx.com
Sneakers are well constructed and very comfortable but wish I had a half size down but this is no big surprise with Adidas crazy sizing methods .but guess thankful to be able to cop these period since there's not to many of these in this exact colorway still available
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 roadrunnersports.com
I've been a lifelong Nike endorser until these came out! Amazing shoe! They take a bit to break in but once they do you'll never go back! I was a huge fan of the Nike free runs and was skeptical that these could even come close... but they did! This has been by far my favorite shoe! I used it for track and xc training.
| COLORWAY | HRYellow/CWhite/Hazy Rose |
Sneakers are well constructed and very comfortable but wish I had a half size down but this is no big surprise with Adidas crazy sizing methods .but guess thankful to be able to cop these period since there's not to many of these in this exact colorway still available
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.
I've been a lifelong Nike endorser until these came out! Amazing shoe! They take a bit to break in but once they do you'll never go back! I was a huge fan of the Nike free runs and was skeptical that these could even come close... but they did! This has been by far my favorite shoe! I used it for track and xc training.
Shoe keeps getting cheaper and less supportive with each iteration. Feels great the first step but just isn't in it for the miles. Hard pass.
These shoes are pretty decent. They have plenty of cushioning in the heel for heel strikers. I’m enjoying them for my runs.
The fit is almost tight enough not to need any laces. I havent tried the size up. I'm normally a 8.5 on Nike but this is snug fit. The archilles tendon has two plastics to hold the shoe in and its tight if you use any cross training or side movements. Just good for running. Been running on a treadmill and not used outdoor.The top lip of my left shoe flips back and doesnt look all that great when i wear it. If only they moved the adidas label just a bit higher so it wont flip back .
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.
Long distances and wearing these all day every day Man they are great for that......We're going to run in a little heavy but listen I'm not going racing.If you walk man you could take these guys on a 6 mile walk and have your feet and knees be right as rain. The white ones will be impossible to keep clean.
I've had the last three versions of this shoe including an ST version back in the day and this shoe continues to impress. I do a lot of hill work and the new toe plate has been great working through my transitions. I'm normally a size 13 but I always size up for the extra toe box room and this one continued with that trend. The toe plate makes the shoe a tad firmer on the ball of the foot but the performance is still there and it's my new daily work horse. I'm 6'1" and 220lb and this shoe definitely gets the job done.
Fits TTS. I liked the feel of the new boost but I couldn’t get over the chunkiness of the heel. Felt a bit heavier than the older boosts too. If you like the chunky style it’s a definite buy!
| COLORWAY | HRYellow/CWhite/Hazy Rose |
