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Ultraboost 21 Shoes

Energy was just energy until energy met Ultraboost 21.

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.


  • Sock-like fit
  • Lace closure
  • adidas Primeknit+ upper
  • Textile lining
  • Supportive heel counter
  • Boost midsole
  • Weight: 340 g
  • Midsole drop: 10 mm (heel 30.5 mm / forefoot 20.5 mm)
  • Stretchweb outsole with Continental™ Rubber
  • Primeblue

Ratings & Reviews

6 reviews
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Nadia Brenner
Test run
March 24th, 2021
I was fortunate enough to be chosen to test out this shoe....for my son actually.
He simply loved how comfortable and light it was compared to other brands. He totally had an enjoyable 7 days of running and looked forward to it everyday.
  • Price: 3
  • Appearance: 4
  • Quality: 5
March 9th, 2021
Great grip when running downhill! Love the cushioning and overall support. Beautiful design too.
  • Price: 4
  • Appearance: 5
  • Quality: 5
Yolanda Dell
The Ferrari of Running Shoes
February 24th, 2021
These shoes just tick all the boxes (except price). Feels like I'm running on air. I've never ever run before and not had knee and hip pains during and afterwards. I didn't think it was possible but Ultraboost21 has proven me wrong. The material is firm yet comfortable and giving, the sock fit feels secure and the laces don't come untied (some of mine do even with 3 knots). They look stylish and I just feel faster when I run in them. Adidas did not disappoint. The price, however, for the SA market, may be a bit of a stretch. Even though I'm not a long distance runner, I'd still like something that's beneficial for my joints....and my bank account.
  • Price: 3
  • Appearance: 5
  • Quality: 5
Great support and comfort
February 22nd, 2021
These running shoes are extremely comfortable and fit my foot well – giving both enough support as well as a bit of space in front for natural foot movement and flexibility.
The heel is slightly higher that what I'm used to and takes some adjusting.
  • Price: 3
  • Appearance: 3
  • Quality: 5
Futuristic technology and comfort
February 9th, 2021
From the moment you put the shoe on you can feel the shoe suction onto your foot. The best addition to this shoe is definitely the tongueless sock. Your heel feels elevated and from the first few stride you instantly feel propelled forward and the boost cushions the heel supremely. It might feel bulky from holding it at first but that's not the case as soon as you start running. Your whole run feels like you are being propelled forward effortlessly. New runner or elite it's the perfect shoe for a nice neutral fit. Plus it's super good looking! Well done adidas I feel like I'm in the year 3000
  • Price: 4
  • Appearance: 5
  • Quality: 5
Melissa Gelling
Ultraboost 21
February 9th, 2021
I love my new pair of ultraboost 21. They don't only look amazing but feel super comfy. The cushioning and feel on my feet are perfect.
  • Price: 5
  • Appearance: 5
  • Quality: 5
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