Reebok Men's Crossfit Nano Pump FS Cross-Trainer Shoe 100% Synthetic Imported Rubber sole Synthetic, Kevlar-infused mesh shell upper for 360-degree durability and breathability Pump Air Cage for support at the collar and a locked-in feel over the shoe platform Low-cut design for quick mobility and a wraparound graphic for an action-ready look CMEVA rebound foam midsole with a NanoShell cover for cushion and protection Stretch Kevlar-infused fusion fit sleeve for durability and reduced irritation