Description: Made of high quality SBR polyester rubber material, high-elastic rubber band, with good elasticity, suitable for a variety of leg types, firm and stable, and hard to slip off. Lightweight, the shoe covers enhance the elastic of the shoe covers, more flexible, so you can't feel the extra weight. Waterproof and windproof, not easy to penetrate, effectively extend time of rainwater entering, worry-free riding on rainy days. The bottom of shoe covers are spliced with rubber, tough and wear-resistant, also add velvet inside, not cold to ride in winter. Winter cycling essential, suitable for cycling, hiking, fishing, climbing and other outdoor activities on windy snowy days. Specification: Material: SBR Polyester Rubber Size Chart: Size S: for size 36.5-37 shoes Size M: for size 38-40 shoes Size L: for size 40-42 shoes Size XL: for size 42-44 shoes Size XXL: for size 44-45 shoes Size XXXL: for size 45-46 shoes Package Includes: 1 Pair Cycling Shoe Covers Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!