LaCrosse - Alphaburly Sport (Mossy Oak/New Break-Up) - Men's: Rubber-clad neoprene for ultra lightweight comfort with 100% waterproof protection. Naturally insulating 3.5 mm. neoprene. 100% ozone-resistant and scent-free rubber. Sport Chassis Outsole System cradles the foot for all-day walking comfort and provides torque stability on uneven terrain. EVA midsole and footbed. Fleece lined for moisture management. Back gusset with Cam-Loc buckle. Fiberglass shank. Weighs 3.6 lbs/pair. Shaft height: 16". Calf circumference: 17".