Scubapro Synergy Twin Trufit Mask With Comfort StrapADVANCED SKIRT DESIGN DELIVERS TOTAL COMFORT AT DEPTH This mask molds to your skin like melted butter. The SYNERGY TWIN TRUFIT benefits from SCUBAPRO's second generation Trufit technology. This design approach features a mask skirt with thicker, firmer silicone near the mask frame to provide support and rigidity, and thinner silicone contouring the face for comfort and to ensure a watertight seal. It's an effective combination that delivers a truly