UA Men's Kick Sprint 4 Track Spikes Lightweight synthetic upper open mesh panels for ventilation. EVA sockliner provides extra cushioning & rebound. One-piece Micro G® foam midsole turns cushioned landings into explosive takeoffs. ¾ Length Pebax® cleat plate is ultra-strong, flexible &lightweight for explosive propulsion. Removable 6-pin spike outsole gives you perfect traction to accelerate & maintain top speeds.