We offer high-quality glass fiber fins sourced from a production factory of famous brand fins! We sell beautifully designed fins at a great value. Please take a look at my profile! [Product] Keel Fin Material: Wood core, Glass fiber FCS2 compatible These fins have a classic and stylish look with a wood core. Of course, they are made of glass fiber, so the performance is excellent! The glass provides flex and strength! These fins are highly recommended for those seeking quick takeoffs and dynamic turns. They match shortboards and fish boards. For those who purchase a fin keyholder at the same time, we will include a keyholder in your favorite color for an additional 700 yen. Please let us know in the comments beforehand.