Simms Challenger Insulated Boot The top wet-weather contender of the Challenger footwear lineup, step into the Challenger Insulated Boot for warmth-firing, waterproof performance that crushes the season's coldest. - Vulcanized rubber outer, 7mm of neoprene insulation, and grid fleece lining - Simms Freestone rubber outsole offers traction in a multitude of environments and is fully compatible with Simms Hardbite Studs, Cleats, and Alumibite Cleats - Non-marking outsole - Pull-on loop for easy on and off - 14" total height for over-the-calf protection WEIGHT: 91.2 oz/pair 2590 g/pair size 11 ITEM #: PG-14020