Feather-light, to help redefine the concept of fast. The adidas Crazyfast .1 Laceless are engineered to deliver acceleration that bends the game to your will. The Aeropacity Speeskin upper is so light, it's almost translucent. Adaptive Primeknit on the collar and the laceless compression forefoot combine with Aerocage reinforcements to keep feet stable and secure. The outsole features additional arrowhead studs and an Aeroplate inlay to extra energy return that propels you forwards.