3mm Snorkeling, Scuba Diving Fin Low Cut Neoprene Sock 3 millimeter Soft Neoprene socks shaped for maximum comfort Available Sizes: XSmall, Small, Medium, Large, XLarge. See size chart in product description Refer to image for accurate size measurements for the best fit Shaped for maximum comfort, slips on easily and prevents chafing Perfect for snorkeling or walking over sand