Scubapro Jet Sport Adjustable Fin (Blue, S/6-8)

This secret lies in the patented design, which allows water to flow between and around each of the twin blades, which flex independently to produce propulsion in much the same manner as a propeller., Blades are also angled to provide symmetrical power on both up and down strokes to achieve seamless propulsion., Patented split-fi n propeller technology - proven to deliver more forward motion with considerably less effort than traditional blades., Drag-reducing vents substantially decrease resistance on both up and down strokes., Extended soleplate acts like a lever to enhance power stroke.