These comfortable hard sole boots are engineered to grant the highest control and power transmission during finning action. The will protect your feet whether you are walking around the dive boat or maneuvering through rocks in the ocean. 6.5mm. neoprene will give you plenty of thermal insulation. The area around the ankle is made of super elastic material. The lower section, in standard neoprene, ensures warmth and adherence. Designed with a toe guard, a side zipper to help get in and out easily and a rear notch to secure the fin strap in place.6.5mm. neopreneHard sole protects the active diverAnkle area made with super elastic materialToe guard shields this sensitive area of the footSide zipper for easy in and outNotch to secure fin strap in placeTwo year limited warranty