Cressi Long Free Diving Fins with Interchangeable Blades System | Gara Modular: made in Italy Long blade with full foot pocket system makes this a perfect choice for deep free diving and spear fishing and for divers of all levels. Interchangeable system that allows the diver to replace the blade for specific diving situations. Ideal to follow increases the diving skill level. Very lightweight and reactive and also well-adapted for the most demanding-of-free-diving use. Blade snap, which progressively charges during the fining upward stride, reacts like a spring at the exact moment the stride is inverted. The Gara Modular foot pocket is wider than the other Gara fin models. We suggest to use it with neoprene socks in order to have a proper fit.