Puma Bolt evoSPEED Disc track spikes help you achieve lightning-fast speed with optimum support and comfort. A soft, suede lining allows them to be worn comfortably with or without socks. The aerodynamic upper will help get you to the finish line in no time. The lace-free Disc Fit System allows for a personalized fit on the fly. A mock Usain Bolt signature is featured on the lateral side. Use the Puma sackpack for easy storage. Upper: Soft, aerodynamic Clarino® synthetic upper hugs the foot and locks it down for optimum support. Soft microfiber and suede lining ensures comfort for barefoot wear. Suede tongue tacked down at the medial side provides a secure fit. Lace-free Disc Fit closure provides a quick, adjustable fit.Midsole: Breathable, die-cut EcoOrthoLite® sockliner offers optimum fit and comfort. Full-length EVA midsole offers cushioning.Outsole: 8-Pin full-length Peebax® Spike Plate controls torsion and propulsion. EverTrack rubber provides durability in high-wear areas.