Ultraboost 21 Primeblue sneakers Meet the adidas Ultraboost 21 sneakers: the pinnacle harmonization of weight, cushioning, and responsiveness. This pair, is constructed with a Torsion System that provides a 15% increase in forefoot bending stiffness for a more responsive run; and Primeblue, a high-performance recycled material made in part with Parley Ocean Plastic which provides more flexibility. Highlights - White - Round toe - Front lace-up fastening - Logo-embroidered tongue - Branded insole - Chunky rubber sole - These styles are supplied by a premium sneaker marketplace. stocking only the most sought-after footwear, they source and curate some of the most hard to find sneakers from around the world. Imported Composition Outer: Polyurethane 100%, Fabric 100% Sole: Rubber 100% Lining: Fabric 100%