Scubapro Deck Sole 5 mm - Black Deck-shoe styling with a non-skid and non-marking sole. 105-degree slant in the ankle area mimics the foot's orientation in its natural swimming position. Rubber sole is flexible, adding to overall comfort. Gusseted zipper makes it easy to don and doff, plus helps keep water out. For detailed size information, please refer to Scubapro Boot/Sock Sizing Guide.