We offer high-quality glass fiber 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] Twin Fin Material: Glass Fiber Futures. compatible Unique coloring! Stylish and mood-boosting design fins! Of course, made of glass fiber, the performance is also excellent! The glass creates flex and strength! These fins are highly recommended for those seeking quick take-offs 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.