Features: 3 mm elastic neoprene with a waterproof coating retains heat and provides insulation in cold and wet conditions. The anatomically optimal panel construction (OPC) with offset seams enhances riding comfort and water protection. Durable, welded flat seams at the front and back prevent moisture from entering. YKK zipper and Velcro closure at the heel make them easy to put on and take off. Compatible with the SPD-SL system and most 3-hole road cycling shoes. Reflective elements for better visibility in low light conditions. Materials: 70% rubber, 20% polyamide, 10% elastane. Waterproof slip-on shoes with excellent insulation that keep your feet safe from cold wind and water.