LaCrosse - Halsey 3" (Black) - Men's: Rubber-clad neoprene for ultra lightweight comfort with 100% waterproof protection. 3mm. neoprene provides stretch and conformed fit. Sport Chassis Outsole System cradles the foot for all-day walking comfort. EVA footbed. Internal foam and rubber for cushioning comfort. Aqua tread beveled-lug outsole prevents debris build up. Weighs 2.2 lbs. per pair.