C4 Blue Flap

The Blue FLAP is a traditional blade for bi-fins with convex tips. They use a similar production design (aside from the tip) as the popular RED FALCON. The fin blade angle was increased to 29°, overall length is 34”, and width is 8” with a constant section water rail. Changes to the lamination process include an ultra strong, light weight and responsive Double Parabolic Curve (DPC). DPC is now a standard on all C4 carbon fins; it provides the most effective fin curvature during a diver's kick cycle for the most efficient propulsion possible. Thanks to the trademark DPC curvature, the 29° angle and the increased length, the performance of the Blue Flap is much higher than the previous C4 Flap VGR. These changes propel the diver through the water with a more hydrodynamic shape by reducing the profile which leads to a considerable reduction of resistance. Thus speed and efficiency is noticeably increased. The Blue Flap is made of 100% carbon T700 Megaforce with a large checkered fabric pattern.

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