A good all round fin which works well as a tri-fin or single fin depending on size and type of board. The base area gives you hold and drive throughout turns while the tips smaller surface area and flex allows easy entry and exit while turning. The variety of sizes gives you a choice of combinations to add various side fins for every type of conditions and boards. :: Unisex > Surf Accessories. Narrow tip & subtle flex through the top half of the finVersatile performance fin that will work well in any 2 + 1 or single fin set upProvides smooth rail-to-rail transitions and promotes tight turns Size: one size.