• Plastic, sponge
• Balance tool:simple design of this fin box is easy to install and use, and can meet your daily needs
• Experience unparalleled stability while surfing with this innovative fin design that enhances your performance on the waves
• The fin box will be a good replacement for the fin box, can keep its function
• The fin box is made of durable plastic and sponge material, tough, durable, wear-resistant
• This fin box sup fin box can the stability of fin box to keep safety of you when surfing