The M-110SQB-CR Visio Pro mask combines TUSA?s superior design and build quality with new innovative materials and frame construction.The Visio Pro features TUSA?s all new Crystalview Optical Glass treated with a proprietary anti-reflective (A/R) and ultraviolet (U/V) coating up to twenty layers thick. This unique Crystalview AR/UV lens offers the diver enhanced color, clarity, contrast and eye protection without sacrificing light transmission or vision on the surface or underwater. The Visio Pro?s lens is protected by a two-piece chrome frame and black surgical grade silicone skirt. In addition, the M-110SQB-CR features TUSA?s patented Quick-Adjust Buckle System, 3-D Anatomical Strap and Round-Edge skirt technologies. TUSA CrystalView Optical Glass LensTUSA?s CrystalView optical glass lens provides superior clarity, color and transmission of light over standard glass lenses used by the competition. Up to 15% of available light can be lost with a standard glass lens due to impurities and reflectivity. TUSA?s CrystalView lenses transmit 92% of available light to the diver for clear crisp vision.Anti-Reflective (A/R) Lens TreatmentStandard glass lenses can reflect up to 15% of available light reducing vision underwater. TUSA?s Anti-Reflective (A/R) Lens Treatment decreases internal and external reflected light. This reduction increases light transmission to 95% resulting in significantly enhanced color, clarity, contrast and better overall vision underwater.UV Lens TreatmentIncreased exposure to UV light can damage the eyes especially in marine environments where reflectivity is high. TUSA?s UV Lens Treatment provides 100% protection from harmful UVA and UVB rays. Blocking 100% of the ultraviolet spectrum (under 400nm) provides greater eye protection without sacrificing light transmission or vision.Features Low profile, single window teardrop designTUSA CrystalView Optical Glass Lens (pat p.)Anti-Reflective and UV Lens Treatments Chrome FrameEnhanced field-of-view over 2-window masksSkirt mounted Quick-Adjust Buckle SystemRound-edge skirt for maximum fit and comfort3-D strap for ideal anatomical fitColors: Black silicone with chrome frame Technology 3D Mask Strap: TUSA?s patented 3D Strap is a true three-dimensional design that snugly fits against the head?s natural curvature. The 3D strap offers unprecedented comfort and fit, unlike standard flat mask straps.Anti-Reflective (A/R) Lens Treatment: TUSA?s Anti-Reflective (A/R) Lens Treatment decreases internal and external reflected light. This reduction increases light transmission to 95% resulting in significantly enhanced color, clarity, contrast and better overall vision underwater.Crystalview Optical Glass: CrystalView optical glass lenses provide superior clarity, color, and transmission of light over standard glass lenses used by the competition. Up to 15% of available light can be lost with a standard glass lens due to impurities and reflectivity. TUSA?s CrystalView lenses transmit up to 95% of available light to the diver for clear crisp vision. CrystalView lenses are used in all PRO models masks.Quick-Adjust Buckle System: The Quick-Adjust Buckle System incorporates a newly-designed low-profile buckle. The result is a compact, lightweight, technologically advanced mask design that can be easily and quickly adjusted for a perfect fit.Round Edge Skirt: TUSA's Round Edge Skirt features a proprietary round edge cross-sectionally shaped skirt.