HIGHLIGHTS
FROM PROBLEM TO PERFORMANCE
This product is made with Primegreen, a series of high-performance recycled materials. 50% of the upper is recycled content. No virgin polyester.
CAN'T STOP. WON'T STOP.
The incredible energy return of adidas Boost is created by fusing together energy capsules, giving you the power to keep your feet moving.
CONTINENTAL™ WINTERGRIP™ RUBBER OUTSOLE
The outsole gives the perfect traction on all surfaces in all wet and cold conditions.
ULTRABOOST
Comfortable and responsive, Ultraboost became our first shoe to be as popular in day-to-day style as it is in performance running.
ULTRABOOST 21 COLD.RDY SHOES
WINTERISED RUNNING SHOES FOR YOUR BEST COLD-WEATHER RUN.
When the weather turns cold and wet, you still owe it to yourself to get out there. These adidas Ultraboost 21 COLD.RDY Shoes make it easier. The insulated upper sheds water to keep your feet warm and dry. A Continental™ WinterGrip™ Rubber outsole keeps your footing secure on steep downhills and slippery stairs. Responsive Boost cushioning gives you an energised feeling that reminds you that you can always go one more step, maybe one more block or perhaps another mile.

SPECIFICATIONS
- Sock-like fit
- Lace closure
- adidas Primeknit+ upper
- Textile lining
- Supportive heel counter
- Boost midsole
- Weight: 340 g (size UK 8.5)
- Midsole drop: 10 mm (heel 30.5 mm / forefoot 20.5 mm)
- Stretchweb outsole with Continental™ Rubber
- Primegreen
- Product colour: Legend Ink / Crystal White / Acid Yellow
- Product code: S23893