[DURABLE]: Nylon construction gives this SUP fin stiffness yet enough flexibility. You don't have to worry about 'came off and breaking so that you can enjoy surfing moments[EASY TO INSTALL]: With the user friendly design and quick-release detachable system, the replacement fin for paddle board can be slid in and secures easily. NO hassle of screws or tools any more[INCREASE STABILITY]: This SUP fin can improve the tracking of your paddle board, making it easier for you to go in a straight line. Also, give your board better maneuverability, making it easier for paddlers to take a step-back/pivot turn[UNIQUE DESIGN]: The replacement fin shaped at the top end of the fin, streamlined appearance design, making the fins more in line with the principle of water sports, with better water breaking and maneuverability, can better assist you to move forward and turn, suitable for all surfers, so you can more easily enjoy the fun of surfing[WIDE COMPATIBILITY]: This SUP fin replacement works on most inflatable paddle boards with the Slide In fin system. Used for surfing board water sports, suitable for various kinds of inflatable surfboards including shortboard, longboard, stand up paddle etc. It can be also installed to kayak to divide water and decrease the water resistance