Nike Flyknit Racer "2016 Release" - 526628 004a Rubber This is the 2016 release of the always-popular "Multicolor" look for the Flyknit Racer. The shoe features the same rainbow-colored Flyknit weave as the previous release, but replaces the original black tongue with a grey shade. Flyknit Racer Style Number: 526628 004a Nickname: 2016 Release Materials: Fabric