The DRYSHOD Ridgeview Boot is a 6mm Densoprene foam insulated bootie that keeps out the cold and wet. This waterproof and self-insulating foam is naturally lightweight, buoyant and very comfortable - your foot and lower leg stay warm and protected in cold and wet conditions. The textile cover on the entire bootie is treated with a nano-scale hydrophobic coating that repels water and mud on contact. This keeps the textile exterior surface of the boot from icing up in freezing temps and from retaining water in the fibers in wet conditions.