• Plastic
• Paddleboard fin: for adventurous seeking optimal stability and control on the water,surfboard balance fin
• Paddle fin:the surfboard fin will be a replacement for the surfboard, can keep its function,paddle board fin
• Plastic paddle fin:this paddle board fin can the the stability of surfboard to keep safety of you when surfing,fin for sup
• Surfboard water stabilizer:this surfboard fin can increase the stability of the board and keep you safe while surfing,fin
• Water stabilizer:this fin was designed to ensure optimal compatibility with surf boards, paddle boards, kayaks,paddle water divider