Highly Recommended: Future Fins, Captain Fin, Christenson Twin Fin Smaller than standard twin fins. Twin fins are known for being loose, and until recently, there weren't many size variations available. However, recently, FCS released a Power Twin in size S, and Coco Ho's signature twin fins are made smaller for lighter riders. Smaller twin fins are likely a good fit for the average Japanese physique. Also, these fins are honeycomb and upright, allowing them to flex well, making them suitable for the small, thick, and powerless waves often found in Japan. Highly recommended twin fins. Please purchase only if you understand that this item is stored, inspected, photographed, and packaged by a non-professional. This is a used item inspected by a non-professional. There may be damage that cannot be identified by a non-professional, and no guarantee is provided for use. If you are concerned, please purchase a new item.