Pearl Izumi - Ride Pro Barrier Web Shoe Cover 70% nylon 20% polyurethane 8% elastane 1% cordura nylon 1% kevlar aramid Imported Reflective elements for low-light visibility PRO Barrier WxB fabric provides optimal wind and water protection; Fleece lined interior for warmth Waterproof, taped external seam; Updated Two stage hook and loop closure provides both sleek fit and easy on and off Recommended for road shoes with external cleats Kevlar road bottom spreads open for easy on and off while providing superior durability