FCS II JS TRI FIN SET - CARBON/YELLOWFCS II JS TRI FINS CARBON YELLOW Jason Stevenson's 'JS' shaper fin updated for 2023. Great for surfers looking for a fin that'll feel dependable in bigger waves, but still want the ability to release the tail and surf progressively in smaller waves. Ideal Conditions Open face, down the line waves, particularly good in point and reef breaks. Board Types Designed to fit the FCS II Fin System. Performance boards with deep concaves and moderate to extreme