*Lightweight Thermoball & trade; Eco Insulations keeps your feet warm and dry all day! *Water-repellent P.E. T nylon upper. Bungee lace-up closure keeps snow from getting in *Waterproof Dryvent & trade; bootie construction. TNF & trade; branded webbing pull loops for easy on *Synthetic mudguard Oso fleece collar lining and Ortho Lite® footbed *Rubber traction sole and 1¼" heel