adidas Nitrocharge 4.0 FG - Men's Charge up your game. Soft, highly abrasion resistant synthetic material with leather finish in the forefoot area for touch and control. 3D print of ENERGYSLING design to indicate the elasticity and stability zone. Soft textile lining for additional comfort. Die-cut EVA sockliner with textile finish for comfort. TRAXION FG for grip and comfort on firm natural surfaces.