adidas UltraBOOST 21 Grey Silver Metallic

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. Brand new in box. Price is firm. Unisex sizing. Listing has been converted to women’s sizing. Box will list men’s size.