This is a futuristic fin, deriving from the Cressi deep sea skin-diving models, which introduces the use of more reactive materials also in the full foot fin sector of normal length. - In fact, the blade is not made from copolymer but from exceptionally light and reactive polypropylene. - This material is combined with a comfortable thermo-rubber (elastomer), used for the foot, for the side stringers and for various inserts. - The blade originates from the upper part of the foot pocket, with a 20\% increase in useful surface area compared to a traditional fin of the same length. - The side stringers extend for a good way along the blade, continuing in a protective seal around the whole edge of the blade. - Two stabilising flaps on the end of the blade, on the sole of the foot, guarantee excellent direction of the fin during kicking. - The excellent, highly anatomic, computer-designed foot, guarantees optimum transmission of leg-fin thrust. - The resulting cocktail is a formidable product that makes kicking easier and powerful at the same time.