OMS Slipstream Monoprene FinsSlipstream Fins are made with monoprene creating a lightweight but high performance fin. Made with a spring heel strap, Slipstream Fins give divers an easy donning fin that will also deliver the goods in any condition. The light weight helps to keep the divers legs in optimal position when a low silting kick is necessary and is also optimal for divers reduce damage while working around sensitive marine areas like coral reefs. Made with Monoprene