The Starboard Purify Prepreg Carbon Stand Up Paddleboard Fin offers a sturdy and fast fin upgrade for paddling in bays, rivers, overgrown lakes, and weedy areas. A perfect pairing with the Starboard Sprint, Gen-R, and All Star. The Starboard fins are developed alongside world-class racers who test and approve every fin from the frontlines of the world circuit. For help deciding which fin is right for you, , , , or chat with us.