Upper: Leather, spand mesh, elastic lace. Midsole: Injected EVA. Outsole: Solid rubber, carbon rubber. Adaptable to foot shape, bootie construction. Exo-Frame: marging 2 material without stitching, so lightweight and producing smooth interior. Breathable: have good air circulation. Lock lace: fast roping system. Reflective: provides reflecting light in low light conditions. Cushlite: have more soft cushioning. Flexolite: flexible pads, make leg your movement more free. HDR: more traction with high-quality rubber