Description
Using over 1.2 million foot scans, we improved the Ultraboost shoe to fit the female foot at 360°. And we didn't stop there. We redesigned the rubber outsole. We tested hundreds of prototypes. We kept at it until we saw a visible improvement in performance. The result? 4% more energy return than theUltraboost 21 for women. The adidas PRIMEKNIT upper features a narrower heel block to prevent heel friction and blisters. It features a BOOST midsole with the Linear Energy Push system. The upper of this shoe is made from a high-performance fiber containing 50% minimum of Parley Ocean Plastic, a material created from recycled plastic waste collected from islands, beaches and coastlines, to prevent ocean pollution.