Fly Racing Street Rain Boot Covers Features Heavy duty waterproof nylon keeps your boots and lower leg dry. 68 Polyester. 30 Rubber. 1 Plastic. 1 Velcro. Helps block the wind Half-sole design allows your shoes heel to grip the peg in rainy conditions Reflective areas to add visibility Velcro back allows covers to be put on quickly Small - 7/8, Med - 9/10, XL - 11/12