Composite Carbon outsole with patented multivent system - Rigid outsole maximizing power transfer and providing comfort under all weather conditions. Ergonomic Thermoplastic molded heel - Good fit and enhanced durability. Thermoplastic molded toes with 3 side vents - Good protection, ventilation and durability. Reversed single velcro strap closure - Easy slip-on and quick to attach. Microfibre upper (synthetic leather) - Lightweight and breathable while waterproof. Nylon Mesh upper - Extreme ventilation and durability.