Used Cressi Free Frog Fins - Black/Red- 41/42 Used Knives which flex independently to produce 217921-02-OB Swimming Accessories Size:36/37 PRACTICAL All the great

which flex independently to produce propulsion in much the same manner as a propeller

This air is channeled by a system of membranes set in the molding around the eyes and nose and deviating the flow towards the rubber skirt rather than the lenses

power transfer and to significantly reduce heel slippage found in many standard flat fin straps

Really a great idea and very simple to use

Used Cressi Free Frog Fins Black Red 41 42 Used Knives which flex independently to produce 217921 02 OB Swimming Accessories Size:36 37 PRACTICAL All the great which flex independently to produce propulsion in much the same manner as a propeller This air is channeled by a system of membranes set in the molding around the eyes and nose and deviating the flow towards the rubber skirt rather than the lenses