The Orca 3.8 raises the bar once again with the Exo-cell buoyancy system. Exo-cell is an innovative material that is over 25% more buoyant than aerodome – it is used in carefully calculated positions on the front chest and rear areas of the 3.8. The system helps to raise your torso and legs in the water, optimizing swimming position, which in turn improves swim performance. Designed for swimming endurance distances or for swimmers who will benefit from an improved torso and leg position in the water, the flexibility of the 3.8 has also been enhanced with the introduction of 1.5Mm-2mm #40 cell neoprene panels on the arm and underarm areas. The high stretch inner lining allows for excellent range of motion, comfort and fast transitions, while the Exo-cell panels are lined with a waterproof jersey to prevent water entry. The 3.8 also utilizes the Hydrolift buoyancy cells – cells of foam positioned on the upper forearm sleeve area – to encourage a better arm position in the catch phase of the stroke, increasing power and reducing fatigue. Other features for the 3.8 include the comfortable low profile neck seal, designed to sit flat against the neck, limiting water entry and reducing the incidence of chafing. The molded neoprene Aquatread forearm panel has been enhanced to provide increased stroke power in The catch phase, whilst remaining easy to remove during transition.