The carbon blades are made of pure 285-T4 and 285-T2 carbon fiber. These fabrics have proven to be the best choice for our carbon blades due to the combination of high strength and instant reaction. Selected carbon fibers combined with the best epoxy resin offer rigidity, reliability and long life. The 285-T4 4X4 carbon weave style eliminates wrinkling, cracking and blade distortion and ensures complete resin absorption, while the 285-T2 2X2 internal weave ensures quick recall. PROCESS Each pair is heat processed for 36 hours and cured at 8 tons of pressure for 24 hours. This process gives the ULTIMATE carbon blades a glossy surface that minimizes water friction and more responsive performance. The manufacturing process minimizes the disposal of carbon fabric and epoxy resin. ULTIMATE WATER SLIDES Carbon blades offer exceptional performance during deep dives thanks to the side rails. These elastic spoilers work like guides, creating a water channel that prevents the fins from sliding to the sides and saves precious energy for divers. FLAP-SHAPED EDGE After testing different shapes of fin edges for hundreds of hours, we have come to the conclusion that the ULTIMATE flap-shaped edge not only overcomes the effort of the diver, but also adds an extra push at the end of the fin movement leg. This element allows the diver to consume less energy compared to previous concave-shaped models. S-CURVES ULTIMATE blades deflect the power created by the diver's movement along their entire length. This was achieved thanks to the internal layout of the carbon fabric. The special internal design gives the blades the ability to take under pressure a curved double S shape which offers the best flexibility, efficiency and functionality. 28° ANGLE The best fin performance is achieved by increasing the blade angle and this requires a well-trained diver who constantly practices and maintains his or her fitness. The 28° angle comforts every experienced diver who maintains his fitness condition and brings the best results. ULTIMATE blades combined with PATHOS shoes offer more dynamic results.