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Pro Teck Fins are surfboard fins with flexible leading and trailing edges designed to enhance board performance and reduce fin cuts. The flexible trailing edge allows the water to flow smoother with less turbulence off the fin. The flexible edge also creates a "rudder action" as the water pressure bends the edge, creating tighter and more fluid turns, similar to the fins of dolphins and sharks. The flexible urethane edge also greatly reduces fin cuts compared to conventional hard edge fins.
Pro Teck FCS 4.25 (Power Flex)