Sorel Whitney snow boots UPPER: Waterproof nylon upper and PU coated synthetic overlays. Available with faux fur collar textile collar or felt collar. Microfleece lining. Waterproof bootie construction. Nylon heel pull tab. Hook and loop closure. INSULATION: 200g insulation. FOOTBED: Removable molded PU-like EVA footbed, microfleece topcover. OUTSOLE: Molded rubber. Molded rubber cupsole construction. HEEL HEIGHT: 1 1/2 in. PLATFORM HEIGHT: 3/4 in. SHAFT HEIGHT: 5 3/4 in. Measurements based on size 8. Uses: Heavy Snow