This cold water boot is constructed of warm, high quality 6mm neoprene, and heavy-duty sole and thick 6mm neoprene. These boots are perfect for rocky bottom shore dives. Bare Quality Constructed of 6mm neoprene for added warmth and durability Thick, Heavy-duty Molded Sole Durable toe and heel cap for extra protection from the elements Fin tab to prevent strap movement Heavy-duty zipper with gusset for easy entry Double-glued and blind stitched High Boot Cut Design