Cetma Prana Composite Carbon Blades
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Cetma Prana Composite Carbon Blades

One of the more popular blades on the market. Cetma makes some nice quality products. We prefer the Prana blade for it's price/performance. It's about the right length/width for a freediving blade. This blade is made of a combination of fiberglass and carbon fiber which helps to keep the cost down while still offering solid performance. One of the key benefits of Cetma blades is the ability to use them with foot pockets that don't have tendons. They will however be more prone to breaking than say using them with foot pockets that do have tendons. Because of this the Pranas do have a different bend profile that your typical Alchemy carbon blade with more stiffness (layers of carbon) near the toe and more flexibility near the tip.

They come in 2 styles:
Cetma Pockets
Universal fit

3 Stiffnesses:

And multiple colors . . .

Carbon Blades PRANA key features:

1) Blades 75% carbon fibre and 25 % S-glass fibre(aeronautic high resistance glass).
2) The blades are made of 100% epoxy PRE-PREG produced with hot melt system and micro-toughened tetra-functional resin. 
3) 3D-Tech: Proprietary Technology, of CETMA COMPOSITES exclusive know-how, with high pressure, high temperature and high degree of applied vacuum, which lead to a component with 0% void level, without defects, with a uniform matrix/reinforcement ratio across the whole blade. 
4) FEM Design: PRANA blades are optimized trough an accurate Design by means of Finite Element Softwares (FEM). The Design trough FEM software allows an optimized distribution of the stiffness, with the aim to obtain a deformation able to ensure the maximum hydrodynamic efficiency.
5) Dimensions: Width 185mm; Length from the bending angle 667 mm; bending angle 33 degrees.
6) Available stiffness: soft (S), medium (M).
7) Colour choice: Yellow, Orange, Red.
8) Footpocket fitting: CETMA COMPOSITES, Mares and Pathos.
9) Water rail: CETMA COMPOSITES Water rails with variable height and high efficiency.
10) Warranty: 2 years on carbon parts; 5 years if fitted with CETMA COMPOSITES foot pockets