Waterproof boots feature hand-layered natural rubber uppers with high-performance neoprene shell. CR-foam bootie with 4-way stretch nylon is comfortable, lightweight, and flexible. A breathable Airmesh™ lining wicks away perspiration. Removable 6mm EVA sock liner provides additional support. Binding is snug at the calf to keep warmth in. Molded outsole is durable for max. protection and stability. EVA molded midsole with contoured footbed. Reinforced toe with a wrap-up bumper. Comfort range: -40° to 60°F.