Celebrate everything the underwater world has to offer when you see it through the Reveal UltraFit dive mask. Most comfortable mask provides the best fit with its three sizes and adaptable skirt shape for all faces. Easily interchange lenses via a snap-in frame and a special included tool. With innovative featuresand materials, youve never owned a more advanced mask. Universal advanced silicone skirt; advanced technology and wrap-around geometrical shape made of crystal-clear, soft silicone provides the perfect fit for the widest variety of face shapes and sizes Advanced fit technology; only available from Aqualung, AFT creates varying textures within the silicone so it can better conform to anyface shape to improve sealingand comfort Pressure reduction zone; each mask is reinforced for stability and pressure points are reduced to maximize comfort and eliminate leaks