SURFCO PROTECK PERFORMANCE 9" FIN sup locks So naturally

So naturally

Hardened steel shackle coated in soft plastic

The upper section has a thinner and more flexible round profile

Why "Double Coil"

Large armholes for greater range of motion

SURFCO PROTECK PERFORMANCE 9" FIN sup locks So naturallyPerformance Fins have a rigid core that creates good drive and projection off bottom turns and cutbacks. The combination of the flexible edges and rigid core will help to make your board ride smoother, faster, and easier to turn. This will allow you to surf better, reduce fin injuries, and add more fun to the sport of surfing! Note: Super Flex Fins are recommended for beginners to professional surfers.