Rocket Dog Balmy Chunky Sandals nav029 This roomy laceless design features This roomy laceless design features an engineered mesh upper with twin gore panels and a cushioned Skechers Air Cooled Memory Foam insole 100% Waterproof Durable hand lasted rubber with a four way stretch inner bootie Constructed with 5mm Neo Tech� insulation Contoured EVA footbed with Durafresh bio technology that activates to fight odors Line with Bogs Max Wick� to keep feet dry Non marking and self cleaning BioGrip anti slip outsole Internal midsole with rubber sponge delivers extra cushioning and warmth Comfort rated to 13�F 25�C Upper Material: Textile Heel Strap for Support