Dive Rite EXP Monoprene Blend Scuba Diving Fins with Spring Straps Dive Rite EXP Monoprene Blend Scuba Diving Fins Injection molded Monoprene blade with monoprene center strip gives rigidity and flexibility for maximum performance with minimum effort Marine grade stainless steel spring heel straps are corrosion resistant Available in sizes Small through X-Large House Of Scuba Is An Authorized Dive Rite Dealer!