Bogs Men's Timberline MT Waterproof Shoe 100% - Neoprene and rubber Rubber sole Waterproof and breathable using MT Technology Hand-lasted natural rubber with a four way stretch inner bootie 3mm SBR/CR + 2mm airmesh + 1mm fleece lining for maximum warmth Non-slip, non-marking and self-cleaning outsole Thermo molded EVA sockliner