The Gara Modular system introduced by Cressi makes this a perfect choice for deep freediving and spearfishing for divers of all levels. The modular design lets the user interchange blades for specific diving purposes, which make 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 either. The self-adjusting foot pocket is constructed with the most modern multi compound joining process for offering comfort and suppleness around the foot where desired and yet have stiffer compounds under the foot pocket and heel area where power transfer takes place. The Impulse features a new innovative design: the blade has a 29 degrees angle, providing the ultimate in efficiency during the kick cycle requiring less energy. Thanks to the angle, the blade will result aligned with your body increasing the dynamics underwater. The blade is made of light and resistant polypropylene, shock-resistant. It features a "Rondine" tail shape for improving control and directionality. The later ribs prevent water flow from escaping sideways. The fin can be comfortably worn with or without neoprene socks. Gara Modular’s foot pocket is wider than the other freediving fins models. we suggest to use it with neoprene socks in order to have a proper fit. The product comes with a pair of pre-shaped insoles that can be cut to fit the foot pocket.