* Futures-compatible fins * Fin template: F4 * Nylon composite construction * 3-fin set designed for a Thruster setup * Colour: Black The Northcore Futures Compatible F4 Surfboard Fins, made with nylon composite material, are based on the F4 template - one of Futures' most favored fins. This template is well balanced and can perform in many conditions, and ideal for everyday riding. Surfers can generate speed and stay on the rail with the medium-sized tip and base. These fins can be used as back-up or replacement fins, are a great option for surf schools and provide a cost-conscious solution.