We offer high-quality fiberglass fins sourced from a production factory of a famous brand! We sell beautifully designed fins at a great value. Please take a look at my profile! [Product] Nubster Fin (Center Stabilizer) Material: Fiberglass Enjoy it in combination with twin fins or quad fins! The Nubster fin, also tested by Kelly Slater! While enhancing drive and hold, it doesn't sacrifice the fun of twins and quads! The pattern will be random due to differences in the cutting of the material. We cannot offer a discount. Thank you for your understanding! For those who purchase a fin keyholder at the same time, we will include a keyholder of your choice for an additional 800 yen. Please let us know in the comments beforehand.