FCS II Channel Islands AM Performance Core 2+1 Surfboard Fins - X-Large/WhiteThe FCS II AM PC Twin+1 XLarge Fin Set is recommended for all board types including fish, funboard and twin fin boards. Features: Overview: Lowest area twin set in the FCS range. The low sweep (rake) and narrow tip means these fins pivot and release exceptionally well, while maintaining incredible trim speed and the ability to quickly break into a turn. Mini stabilizer has a narrow, elongated template with a rounded tip to add control when driving