Following the impulse project Cressi has successfully transferred the same design parameters for s-shaped undulating deformation to this innovative carbon fin. This particular movement permits a notable accumulation of elastic potential energy in the blade, which is released in the return kick, transforming into thrust. The effect has been achieved using a finite elements programme that enables the performance offered by carbonfibre to be exploited to the full. The blade is all-carbonfibre with an angle of 29°. The fibre is imported from Japan, manufactured by Mitsubishi to strict qualitative protocols. The shaped and processed sheet is then produced in a specialist plant in turkey. The blade is subsequently finished with an industrial co-moulding process at cressis genoa plant. The elevated chemical bonding achieved between blade and rail, effectively creating a single piece, has permitted the elimination of the rigid glue that prevented the carbonfibre blade from flexing naturally.