TRUE AMES L FLEX 9.0 VOLAN 1FIN ONE SIZE:OS The large side fins from PREORDER The large side fins from this set are big enough to be ridden in a pure twin fin configuration and will work in virtually any size or shape board in an optimum surf size range of 1 to 6 feet You’ll be swapping boiled carrots for eggplant fried with mint Throw one in your board and feel the difference that four decades of refinement can make This surfboard design is borrowed from the same hydrodynamic principles in boat hulls–it has a convex bottom contour which enables riders to trim more forward and find plane in waves with less power