The YEEZY BOOST 350 V2 Core Black/Dazzling Blue/Core Black features an upper composed of two toned re-engineered primeknit. 25% of the components used to make the upper contain a minimum of 50% recycled content. The midsole utilizes adidas’ innovative BOOST™ technology while a semitransparent TPU cage wraps the BOOST and adds a distinct design element to the iconic model.