The Gara Modular Impulse Turbo is an ideal fin for intermediate to advanced free diving and spearfishing. Following Cressi's recent Impulse project Cressi has successfully transferred the same design parameters resulting in this innovative S-shaped fin. The particular movement the blades permit is from a notable accumulation of elastic potential energy in the blade, which is released in the return kick, transforming into thrust. Therefore, you are using less energy to kick for longer and further distances. The modular design lets the user interchange blades for specific diving purposes, which makes this the perfect fin to grow with, as the diver can change blades as their skills increase. Any Cressi polypropylene, fiberglass, or carbon fiber long blade will interchange in minutes without any modifications to the foot pocket. The thermoplastic rubber used for the water channeling rails and is extremely flexible and soft, as not to undermine the intrinsic characteristics of the blade. Included with the pair of fins ae the Gara Modular insoles. The new insole for Gara Modular fins is recommended for use with thin boots in temperate waters, because it improves the kick performance. The semi-rigid material of the insole is completely recycled. The insoles are supplied as a pair (right and left foot) and can be cut into their shape in three different sizes, according to pre-printed guidelines.