Neo Carbon Fiber Stereofins Spearfishing Freediving Fins Scuba Diving Snorkeling NEO-CARB-FINS Blade is made from a high quality of epoxy resins mixture, carbon and fiberglass. Blade covered thin (1 millimeter) neoprene material with teflon layer. Unique camouflage surface - take colors depending on place where you swim (sunny - it become more light-colored, overcast - more dark). Comfortable foot pockets from soft EPDM rubber (foot sizes from 35 to 50). Rubber rails attached to the blade provide maximum efficiency in water flow redirection.