The design with the four ribs allows the fins to arch during the kick

thus preventing them from fogging up

The conical filter of the hi-flow outlet is the same for the int and din connection

Average inspiratory effort 6 mbar

It is safe

Stick anti abrasioni muta neoprene The design with the fourThe fluid contained in the Skin & Neck Protect stick is absorbed by the skin and creates a thin protective film that protects the skin from rubbing with the neoprene. Even in water or when sweating profusely, the skin remains protected without affecting its natural hydration. The odorless fluid can be easily applied with the ball stick and leaves hands degreased to maintain the feeling of water. Skin & Neck protect not only protects the skin: the