Description Proteck Power Flex Grom 4.0 Thruster Set Perfect for that intermediate to advanced young ripper under 100lbs. Available in Futures or FCS Base 10-14 Day delivery on these Fins Power Flex is a Pro Teck Fin with a medium core flex. The smoke-colored edge fin bends on turns, and then springs back, creating a forward thrust similar to a swim fin. The medium flex core and flexible trailing edge makes the board turn smooth and fluid, with continuous speed. Power Flex Fins are recommended for intermediate to professional surfers. Related
