The Standard FCSI Fiberglass Fins have been specially design for use with wakesurfers. Unlike our ocean brethren, wakesurf are deliberately made to accommodate flatter decks with fewer concaves and therefore it is essential that that fit the pocket tighter to help novice surfers maintain maximum speed & acceleration to keep them from peeling off the back of the wake. Riders learning to execute tighter turns and spin like manoeuvres will appreciate upgrading to a pair of FCS fins this summer!