Over the past several years Nature's Wing® Patented Split Fin technology has taken the diving and snorkeling industries by storm. This water flow technology allows water to accelerate through the split in the fin like water jetting out the nozzle of a hose, providing up to 40% greater efficiency while virtually eliminating muscle strain and fatigue. Because the split allows water to move more efficiently it also reduces turbulence and drag around the blade. Therefore, you should " Expect No Resistance " while kicking, even when maintaining high speeds while moving through the water.

· MORE GAIN WITH LESS STRAIN - The split blades twist back and forth during each stroke like counter rotating propeller blades to provide up to 40% greater efficiency and less fatigue than conventional "paddle fins". Patented "Propeller-Fin™Technology" offers improved acceleration and endurance with rapid small range "flutter kicks". Some models have patented molded rubber flex zones in the blade to increase water channeling and create a "cupping" effect.

ADJUSTABLE HEEL STRAP FOR IMPROVED FIT, SIZING AND COMFORT - The adjustable heel strap allows a customized fit that eliminates "slop" inside the foot pocket. This greatly reduces chaffing and blisters and also increases control, maneuverability and acceleration.