CGI Offers Black Rain Boot Cover nylon Made for Bike Riders to enjoy the ride. Rain boot covers are waterproof. simply keeping dry during a daily walk or commute.Easy to slip over boots and shoes to keep your feet and calves dry and warm during bike rides. Comes with reflective safety strip lines. Made with High-Quality Nylon material. SIZES: Small: 8-9, Medium: 9.5-10.5, Large: 11-12.5, X-Large: 13-14, XX-L. Dimensions: Height 14.5 inches.