adidas Men's Ultraboost 21 Running Shoe
Item No. 25562919
Only ships to Canada
Prototype after prototype. Innovation after innovation. Testing after testing. Meet adidas in the hot pursuit of the pinnacle harmonization of weight, cushioning and responsiveness with the Ultraboost 21. Say hello to incredible energy return. The new Torsion System provides a 15% increase in forefoot bending stiffness for a more responsive run.
FOOTWEAR ACCESSORIESEverything you need for shoe care. Cleaners, protectors, laces, insoles and more. Shop Now
PRIMEBLUEPrimeblue features Parley Ocean Plastic which is made from recycled waste that's intercepted from beaches and coastal communities before it reaches the ocean.
BOOSTBoost is a groundbreaking innovation in cushioning from adidas. It provides more energy return than any other foam cushioning material in the running industry, combining soft comfort with responsive energy for the ultimate running experience. It performs more consistently and doesn't lose its cushioning properties like standard EVA foam.
STRETCHWEBStretchweb rubber outsole is lightweight and elastic, adapting to the ground for stability and working strategically to optimise the unique properties of boost from touchdown to push-off.
CONTINENTALThe Continental rubber compound offers better grip and traction in all weather conditions.
PRIMEKNITadidas Primeknit is carefully engineered to naturally expand with your foot while you run to give you a more comfortable fit and help reduce irritation.
- Fabric: Primeknit+ upper
- Boost midsole
- Textile lining
- Supportive heel counter
- Stretchweb outsole with Continental rubber
- 10mm midsole drop
- Weight: 340 g
- Sock-like fit
- Lace-up construction
- Product ID#: 25562919
- Vendor Style#: FY0379
Fit & Sizing
|cm (Ski Boot Sizing)||24||24.5||25||25.5||26||26.5||27||27.5||28||28.5||29||29.5||30||31||32||33|
|cm (Ski Boot Sizing)||21.5||22||22.5||23||23.5||24||24.5||25||25.5||26||26.5||27||27.53|
|cm (Ski Boot Sizing)||19||19.5||20||20.5||21||21.5||21.5||22||22.5||23||23.5||24||24.5||25|
|cm (Ski Boot Sizing)||13||13.5||14||14.5||15||15.5||16||16.5||17||17.5||18||18.5|
If it doesn't fit, return it within 30 days, as long as it's unworn, unwashed and unaltered.
See Returns Policy
If your measurements are in between those listed in the size chart, pick the next larger size.