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 09/22/2025 16:11:19
originally posted on hibbett.com
I’ve had my eye on these for a while and so glad I finally got them. They work great as everyday tennis shoes for my walks and workouts, and look awesome with joggers or leggings, overall very supportive. A couple things to keep in mind are they run a tad bigger than true to size and the back heel juts out maybe an inch. I personally like the chunky look this feature gives them.
originally posted on very.co.uk
Picked these up as a gift for my wife. I’ve been a massive fan of UB for years and speak highly of them whenever I can. Great colourway on this pair. Fit true to size and look great.
originally posted on sportsdirect.com
I took a chance with the sizing but fitted perfectly. I'm a size 5 shoe but always go for 5.5 size in trainers. I only run up to 3 times a week short distances of 5ks. So I can't comment about longer runs. But they do the job for me. Fit perfectly round my ankles.
| Release Date | 08/31/2021 |
I’ve had my eye on these for a while and so glad I finally got them. They work great as everyday tennis shoes for my walks and workouts, and look awesome with joggers or leggings, overall very supportive. A couple things to keep in mind are they run a tad bigger than true to size and the back heel juts out maybe an inch. I personally like the chunky look this feature gives them.
Picked these up as a gift for my wife. I’ve been a massive fan of UB for years and speak highly of them whenever I can. Great colourway on this pair. Fit true to size and look great.
I took a chance with the sizing but fitted perfectly. I'm a size 5 shoe but always go for 5.5 size in trainers. I only run up to 3 times a week short distances of 5ks. So I can't comment about longer runs. But they do the job for me. Fit perfectly round my ankles.
Love these trainers for running, I now how them in 3 colours. The ultraboost 21 definitely come up smaller, whereas ultraboost 22 are true to size, so I returned and sized up by half of size, which was quick and easy. Gorgeous colour, super comfy, good quality = happy running
These shoes are so comfortable straight out of the box. I love the wider toe width. I purchased size 8.5 fit perfect.
I use these for the gym & athleasue because they're cute! Super comfortable. I have the ash peal & pink. Great support for hit workouts, just enough cushion. I love them!
Too tight at ankle even my ankles are thin. Type of white fabric which gets dirty even when you just look at it. You have to fly to keep them clean.
Absolutely love these ultra boost adidas they are literally worth the cost I feel like they are a better investment from when I spent hundreds of dollars on gym memberships and I never go. Since I got my ultra boost I felt like my body is getting toner! I am a size 7WIDE and I got 7.5 Regular because they don't carry wide, but I could of done 7Regular and the fit would of been better, but is okay! I have thick socks to help with the the remainder .5 to fill in! I am 5'5 175lbs
I ran in these a couple of times and felt fast. But in the end, these shoes hurt my calves so now I have a pair of shoes I can't wear :( Be careful of the profile of these shoes and break them in gently if you're not used to wearing the Ultra Boost 21. I loved the Ultra Boost 19s and 20s.
I love these shoes! I've previously had two 7.5s in adidas and after a year and a half, I finally had enough and new I had to half size up. I bought these and they're fantastically comfortable running shoes. I love adidas' sock style shoes, love that they're roomy in the toe and were a great blind buy!
| Release Date | 08/31/2021 |
