The Captain Fin Fins JEFF MCCALLUM 8.5 are designed for surfers looking for a fin that can handle the toughest conditions and provide superior performance. These fins feature a carbon-fiber base for increased stiffness and a wide base for more hold and control. With a semi-symmetrical design, the fins provide a smooth, predictable ride on waves of any size and shape. Whether you re a beginner or professional, the Captain Fin Fins JEFF MCCALLUM 8.5 are an excellent choice for surfers of all levels.