Crocs Women's Blitzen Polar Clogs Lightweight Croslite material conforms to the shape of your foot for superior comfort. Croslite is odor-resistant, so it helps to maintain a healthy foot environment. Synthetic fur lining feels warm and soft, and is washable for easy cleanup. Croslite upper, polyester (fleece) upper lining and sockliner, Croslite insole, midsole and outsole. Care: Wipe off with a damp cloth.