Beuchat Aquabionic fins with Warp TechnologyExclusive patented WARP Technology The special 45 orientation of the double hinge increases the surface of the blade during the stroke and acts as an energy accumulator. The central deformable part of the fin allows the blade to accumulate a volume of water that is determined by, and proportional to, the effort produced by the diver. On returning to its original form, this mass of water is forced to the rear in line with the fin by the central