adidas Nitrocharge 1.0 TRX FG Soccer Cleats Synthetic Strong mesh layer in the rear of the foot offers maximum protection Lining: Synthetic leather heel lining for supersoft comfort. Energypulse bottom utilizes a high-elasticity forefoot element to produce an energy output. TRAXION 2.0 FG stud configuration for maximum grip and accelaration. Upper: Strong, mesh layer in the rear of the foot offers maximum protection. Hybridtouch is a supersoft upper material - Protection pads in toe and heel provide comfort in passing, receiving, and tackles. Lining: Synthetic leather heel lining for supersoft comfort.