adidas Performance Men's Nitrocharge 3.0 TRX Firm-Ground Soccer Cleat 100% Synthetic Leather/Textile Rubber sole Firm ground design with new energy sling for lateral support and quick direction change Soft abrasion resistant synthetic with leather finish in forefoot for touch and control Traxion firm ground stud design for grip and comfort on firm natural or artificial surfaces Ethylene vinyl acetate sock liner Soft durable synthetic lining for comfort and fit