This is the Trident Tapered Silicone Fin Strap For Scuba Diving Features: Each fin strap has been manufactured with the best materials. Tapered end, One black fin strap with grip 17 3/4" X 1" Highly durable and designed for comfort. The RP63-BLK fin strap will provide a secure fit for your scuba diving needs. Dive in style and comfort with ease of use! Great for your save-a-dive kit.