Scubapro Synergy Twin Trufit Scuba Diving and Snorkeling Mask Trufit Technology can be identified by its unique ribbing texture. The silicone contouring the face is thinner, giving a softer feeling, for a truly unique fit and seal. The silicone is thicker and firmer, with a matte finish near the mask frame, providing needed support and rigidity. As with all SCUBAPRO products the Trufit skirt has been tested by demanding divers and improved upon before ever hitting the market. The Synergy Twin mask is constructed using a NEW generation Trufit skirt, although first generation Trufit with unique ribbing and softness can be found on certain Spectra and Volta models. Only SCUBAPRO has Trufit Technology. It's a SCUBAPRO exclusive. Trufit is a revolutionary mask skirt now available on the Synergy Twin mask. And the skirt is really one of the most important elements of a mask. An excellent mask is essential to premium diving adventures. Trufit makes you feel one with your environment, one with your element: wate