"All Crocs™ brand shoes feature Crocs’ proprietary closed-cell resin, Croslite™, which represents a substantial innovation in footwear. The Croslite™ material enables Crocs to produce soft, comfortable, lightweight, superior-gripping, non-marking and odor-resistant shoes. These unique elements make Crocs™ footwear ideal for casual wear. PLEASE NOTE Kids Blitzen's only have straps up to size 11/12"