C4 Blue Flap Carbon Fin pre drilled to mount with the Stingray footpocket.
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 870mm (34”), and width is 205mm (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 degree 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.
3 stiffness options:
• 25/Soft – This stiffness is suited for divers who weigh -175lbs, diving between 20-80’ with a mix of surface swimming and deeper diving/spearfishing.
• 30/Medium – This all around medium stiffness is intended for divers who weight 175-210lbs, engage in surface as well as a mix of shallow and deep diving to 30 meters (100’).
• 40/Hard. This stiffer blade is generally indicated for bigger divers weighing over 200lbs or with a strong preference for deep spearfishing to a depth of 40 meters (130’). The stiffness of the blade renders this blade stiffness choice well suited to overcoming added negativity at depth and rapid acceleration requiring more power and energy from the divers’ legs. The 40 stiffness are not recommended for beginners and lighter divers as they can contribute to ankle strain and reduced bottom times.