This NEW Trufit ultra-soft skirt has been technically developed to not only fit any and every face shape, but also incorporates a unique rigidity allowing perfect seal and comfort. Rather than consisting of two separate materials, the NEW Trufit skirt has been achieved using two different thicknesses of the same high quality silicone in one skirt, assuring total comfort and sophisticated simplicity. 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. Try a Trufit mask, and feel the difference. 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: water.