Christenson Twin

Overview From high performance twins to more traditional shapes, this is a perfect compliment to your twin fin. This set provides smooth and fast down the line speed. Board Types Designed to fit the FCS II Fin System. Recommended for all board types including fish, funboard and twin fin boards. Performance Glass Performance Glass (PG) fins are machine cut from layers of solid fiberglass. These fins are stiff, and are widely used by pro level surfers because the integrity of the flex is maintained under immense force, and in the most extreme of conditions and situations.