adidas Ultra Boost 21 Core Black (W) (Size 8W)

Retail Price: $250 With the help of 1.2 million foot scans, we updated Ultraboost with a complete 360° female fit improvement. And we didn't stop there. We re-engineered the rubber outsole. We tested hundreds of prototypes. We kept going until we saw visible improvements in performance. The result? 4% more forefoot energy return, compared to Ultraboost 21 for women. The adidas PRIMEKNIT upper includes a narrower heel fit, designed to avoid heel slip and blisters. You'll be riding on a BOOST midsole with a Linear Energy Push system. The shoe's upper is made with yarn containing 50% Parley Ocean Plastic — reimagined plastic waste, intercepted on remote islands, beaches, coastal communities and shorelines, preventing it from polluting our ocean. Regular fit Lace closure adidas PRIMEKNIT textile upper Soft heel fit Linear Energy Push system BOOST midsole Weight: 10 ounces Stretchweb outsole with Continental™ Better Rubber Yarn in upper contains at least 50% Parley Ocean Plastic and 50% recycled polyester Product colour: Core Black / Core Black / Cloud White