describeXUEMEI High Quality Material This surfboard SUP flipper is made of nylon plastic with smooth and delicate surface treatment, which can be stably fixed on the surfboard. And the material has good wear resistance and impact resistance, and good water breaking performance.New Design Our surfboard fins have a unique shape, with fins on the upper end, and the streamlined appearance conforms to the physical principles of water sports, which effectively improves the flexibility of the surfboard, improves the steering performance, and helps you paddle safely.EASY TO USE Our surfboard fins have a snap-in safety reinforced buckle. The fin mount can be attached to the wakeboard mount by gluing it to the back end of the surfboard first. If you don't need the fin in the future, slide the fin catch to remove it.Safer paddling experience Our surfboard fins are used to increase the stability and balance of the surfboard, effectively reducing the impact of reefs when paddling. Ideal for mounting on beginner surfboards to help you stabilize your stroke.APPLICATION Works with any surfboard with a universal or US fin box and can also be used as a SUP fin replacement, surfboard repair kit, paddle board, inflatable SUP board inflatable paddle board, stand up paddle board or kayak paddle. Ideal for surfers who like to turn.Specificationmaterial: plasticSize: Approx. 21.5x18x3.5cmColour: BlackPackage includes:1 surfboard fin, (without base)