ITEM NAME:Pack of 3 Premium Surfboard Fins - Thruster Surf Fins - G5 Tri Fins - Black Description: Made of qualified nylon and 30% fiberglass with great durability, lightness and flexibility Universal: suitable for G5 style fins The longboard/shortboard/ fun board surfboard fin seamlessly connects turns and allows surfers to move up and down the board This versatile fin is designed for all.The longboard/shortboard/ fun board surfboard fin seamlessly connects turns and allows surfers to move up and down the board. Universal: suitable for G5 style fins. Fin Size: G5. This versatile fin is designed for all conditions and combines drive, speed and response for modern longboarding.