MANTRA Carbon Fins are the flagship model of Cetma Composite, they are fins suitable for the spearfisherman or freediver who wants a high quality product. The Mantra are light and progressive fins, with high performance, suitable for freediving and sports freediving.MANTRA Carbon Fins are designed for those who want a fin that does not compromise on materials and construction techniques. It is the best-selling product from Cetma Composites, thanks to the extreme flexibility of use of this extremely innovative fin. Thanks to the Dynamic Resonance System, this fin is able to maximize thrust while reducing fatigue: the feeling is that of a soft fin, but with powerful thrust. The 33° bend angle has been designed to facilitate surface swimming even in strong currents. The blades are made entirely of 100% carbon Pre-preg, obtained with hot melt impregnation systems with tetra-functional resin. This exclusive technology of Cetma Composite at high pressure, high temperature and vacuum implies a component free of defects, with a constant fiber/resin ratio throughout the blade.Through engineering design, it was possible to distribute the stiffness and mass of the blade in such a way as to “tune” the blade in a certain range of natural frequencies close to those of the finning frequency, thus allowing the phenomenon of resonance. The MANTRA Carbon fins by Cetma Composites are assembled with S-Wing foot pockets, without stringers. The water rails are constant type and have a height of 10 mm. Available in the following hardnesses: Super soft – Soft – Medium – Hard. Blade dimensions: 742 x 195 mm, tilt angle 33 degrees. Graphics of various colors.
