No more soggy feet when getting in and out of your boat. The NRS Boundary Sock is waterproof and warm, perfect for wearing with sandals or in a boot as added protection against wet and cold. 3 mm neoprene with titanium laminate adhesive provides protection from cold water. Glued, blind-stitched and fully taped seams keep the water from seeping through the material, keeping you dry and warm. The neoprene HydroCuff(TM) creates a comfortable seal around your calf keeping the sock up and helping to seal out water. The three-panel construction is comfortable when wearing in a sandal or other shoe. 18" tall is perfect for shallow water put ins and take outs.