Features of the Sorel Toddlers' Whitney II Strap Boot Waterproof nylon Upper and PU coated synthetic overlay Tropic Pink, Quarry, and Black options have faux fur and a microfleece lining Coal option has a textile and microfleece lining Elk option has a felt and microfleece lining Waterproof bootie construction Nylon heel pull tab and hook and loop closure for easy on and off 200g of Insulation Removable molded PU-like EVA Footbed with a microfleece topcover Rubber Midsole Molded rubber Outsole