Scubapro’s Crystal VU Single Lens Mask has a patented tempered single glass lens design, with patented no-seam side windows for increased field of view. The lenses are no-tint glass for greater visual clarity and safety in diving. With its double feathered edge sealing crystal clear silicone rubber skirt for increased comfort, wide split style mask strap and streamline shape combined for a snug fit all makes this one great mask for any diver. Mask is equipped with push-button swivel buckles for easy adjustment and on/off action and an easy to reach one hand nose pocket for ear equalization that can be utilized even when wearing thick gloves. The Scubapro Crystal VU-Plus Mask provides an exceptional panoramic view of the underwater world. Although it is a 3-window mask, the Vu-Plus provides a low internal volume that is easy to clear. Mask has an over-molded frame for strength and durability. The lenses of the mask are made from an ultra-clear glass. Standard glass has a green tint. The green tint you see is the result of iron impurities left over in lower quality float” or window type glass. That green tint distorts true colors and blocks out some of the light that reaches the eye. Ultra clear is a new and exciting optical quality tempered glass with exceptional clarity and high light transmission, with no color distortion. The exceptionally high light transmittance and lack of distortion in the ultra-clear lens maximizes the light available for improved visual acuity, especially underwater in low light conditions, better vision, truer colors are what you get with Scubapro’s Ultra-Clear Lenses. The Scubapro Crystal VU-Plus Mask is available in multiple color choices and comes with a protective mask box.