Fin with interchangeable carbon blade, very lightweight and reactive, suitable for advanced apnea or spearfishing. Directional carbon blade to ensure the response and thrust that only composite fibers can deliver. Cressi's ‘Self-adjusting Foot Pocket’ in a two-material moulded construction features a particularly soft longitudinal upper section for improved comfort even if you are wearing thick diving socks. Modular Carbon blades are the result of an industrial manufacturing system that ensures the highest precision standards while complying with strict technical parameters that cannot be attained if traditional methods are applied. Another important and exclusive feature of the material used is that these fins are built to last and their performance remains unchanged over time. Even after some intense and lengthy use, the blade does not yield or loose its original technical characteristics.