FIN MATERIAL PERFORMANCE CORE. FIN SIZE SMALL (55Kg - 70 Kg / 120 - 155 Lbs) -Yellow, black, pink, MEDIUM (65 - 80Kg / 145 - 175 Lbs) -Yellow sides, black centre. FIN SPECS SMALL: Base: 4.37" / 111mm, Depth: 4.41" / 112mm, Area: 13.85"^2 / 8934 mm^2, 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.