FIN MATERIAL ULTRA-LIGHT. FIN SIZE MEDIUM (65 - 80Kg / 145 - 175 Lbs). FIN SPECS Base: 4.37" 111.0mm, Depth: 4.55" 115.0mm, Area: 14.76"^2 9525mm^2, Sweep: 33.0 degrees, Foil: IFT. Ultralight fin with a well balanced template, hydrodynamic foil on the s
The FCS system (Fin Control System) was designed by Brian A. Whitty in Elanora, Australia, and patented on November 7, 1995. It can be recognized by the 2 tabs on the fins which are designed to fit into a securing plug that attaches the fin to the board.