The Seirus Cat Tracks help prevent binding malfunctions caused by wear and gravel contamination of your boot soles. These slip on walking soles for your ski boots are recommended by all major boot and binding manufacturers. In addition to wear protection, they improve traction and provide cushioned walking comfort. Body: 81% Nylon / 19% SpandexPalm Patch: 100% PolyurethaneCuff: 90% Neoprene / 10% NylonLining: 100% Polyester Imported EXTENDS BOOT LIFE - Cat Tracks Improve traction and extend the useful life of your ski boots with this slip on walking sole for your boots PREVENTS BINDING MALFUNCTIONS - Caused by wear and gravel contamination of boot soles FITS ALL MAJOR BOOT BRANDS - Recommended by all major boot and binding manufacturers COMFORTABLE - Adds cushioned walking comfort while eliminating damage from gravel and sand PRACTICAL AND CONVENIENT - Fits into your pocket when not in use. Great for winter outings, skiing, snowboarding, hiking, snow shoveling​​