Atomic Aquatics X1 Fin Open Heel All Sizes for Scuba Snorkeling Silver Atomic X1 Fins Rigid Low-Profile Side Rails and shorter, stiffer blade make turning and pivoting easier Monocoque Structure and Power Plate is connected to the low-profile rails, efficiently transferring power from the leg and foot to the rails. Asymmetrical Blade Bend Flexing is better for alternate kick styles. Scissor kicks, frog-kicking and helicopter turning in tight circles put more emphasis on the up-kick or return stroke Vertical Stabilizers, or Strakes, add stability and lower drag to keep the fin tracking straight as an arrow. Other fin designs use taller side rails to keep the fin tracking straight. Exclusive EZ-Lok Buckle System lets you easily snap the buckle on and off.
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