Sorel Whitney Strap Boot combines a waterproof, breathable membrane with extra insulation for warm, lightweight winter wear. The design pairs a nylon upper with a faux-fur trimmed cuff and a removable footbed for easy on/off and added comfort. Key attributes: Black | Nylon | Waterproof, breathable membrane | Insulated for cold weather | Lightweight construction | Hook-and-loop strap closure | Removable footbed | Faux-fur trimmed cuff | Microfleece lining | Low ankle silhouette | Composition & care: Upper: waterproof nylon with PU-coated synthetic overlays | Lining: microfleece and faux fur cuff | Footbed: removable PU-like EVA | Outsole: molded rubber