Hollis M3 Black Dive Mask Colour Options:Black Crystal Frame-Black Skirt Photochromic Lens

Photochromic Lens

Prescription Swimming Goggles

Ideal Glasses for water activities such as Jet Skiing

» T-shell™ lens coating resists scratching in extreme environments

Hollis M3 Black Dive Mask Colour Options:Black Crystal Frame-Black Skirt Photochromic LensHollis M3 Dive Mask Lens Options. Single Vision Prescription Lenses Gauge Reader Prescription Lenses 35mm Bifocal Prescription Lenses Franklin Bifocal Prescription Lenses Single Vision Lenses Single Vision Lenses have a single focal point for distance vision and can be made for a wide range of prescriptions including high prism and high cylinder powers. Single Vision lenses are made from optical crown glass for optimum optics and also available in