The Koalition California Classic 9.0 centre fin is beautifully made from fibreglass and works in both single and 2+1 fin setups. The California Classic outline is a very versatile shape which is suited to all types of surf conditions and riding styles. This fin can be used in performance longboards with a single fin or a 2+1 fin system. It offers a combination of drive, speed and response for modern longboarding. You’ll seamlessly hook-up all your turns whilst roaming up and down the board.