Crocs Chocolate / Chocolate Kids' Blitzen Comfortable Furry Clog The Crocs Blitzen winter clog includes a croslite material sole and a super soft synthetic fur lining for warmth. The Blitzen is the perfect winter shoe.The Crocs Blitzen winter clog features: Fully molded croslite material slip on clog. Super soft synthetic fur lining. Lining is removable and washable. Three iconic holes and Crocs logo.