Seirus Innovation Hot Ratz Boot Dryers Body: 81% Nylon / 19% Spandex Palm Patch: 100% Polyurethane Cuff: 90% Neoprene / 10% Nylon Lining: 100% Polyester Imported EFFICIENT - Warms & Dries boots from the inside QUIET - Whisper quiet fan for home and car use PORTABLE - Compact and convenient for easy travel VERSATILE - Works will all footwear INDLUDES - Convenient travel bag