The Dolphin PC draws on the advantages ofthe Resin Transfer Moulding (RTM) process andthe introduction of a carbon base to producea lightweight longboard fin. The stiff base andprogressive flex through the top third of the fintranslates into added performance and responsein the water. :: Unisex > Surf Accessories. Designed to deliver the feeling of a traditional fibreglass fin with the added\n performance of reduced weightRTM (Resin Transfer Moulding) produces a lightweight fin with remarkable flex.\n a smooth feel & an impressive aestheticLength: 7 inchesPerformance Core:Versatile performance single fin enhanced with PC construction and a stiff carbon\n baseNarrow tip and responsive flex through the top half of the fin provides fast rail-to-rail\n transitions and promotes tight turns Size: one size.