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Zip Fins

Aqua Sphere Zip Fins. Patented Natureaposs Wingreg fin technology is the only fin that eliminates ankle fatigue for fitness swimmers, allowing for a full leg workout that can be sustained over longer periods of time for maximum and efficient aerobic benefit. The unique blade features specially engineered side rails, strategically aligned flex channels, and hydrodynamic stiffening battons that combine to make the Zip Fin the most comfortable and efficient fitness fin on the market. The split blades, which act like propellers, twist independently during each stroke to a precise angle of attack t.....