The FCS Kai Sallas Longboard Fin features functional designs coupled with modern construction methods to deliver the ultimate in longboard performance. This high performance longboard template was designed by Hawaiian waterman Kai Sallas the Kai Sallas longboard fin is ideal for 2 + 1 set ups. An extra length at the base of the trailing edge will produce exceptional drive and hold through turns. The extra area in the base quickly tappers into a narrow tip allowing for acute directional changes. Performance Glass (PG) construction creates a stiff base with a smooth flex through the top third of the fin. :: Unisex > Surf Accessories. FCS Longboard Performance SeriesFunctional Designs Coupled with Modern Construction MethodsDelivers Ultimate in Longboard PerformanceSize: 7 inch Size: one size.