C4 250 FootpocketsThanks to the use of a TPE 75 ShA polymer overmolded on a rigid sole, the 250 foot pocket transmits energy from the foot to the blade in the best possible way, resulting in highly efficient fins. The design of the geometries has allowed to use minimum thicknesses resulting in a reduction of the weight of the 250 footpocket in size 41 42 to just 250gr. The reduced mass (weight) of the 250 footpocket minimises the energy required for movement, thus