Hollis M3 Black Dive Mask Mountain Biking PRIZM TRAIL Light Transmission: 36%

PRIZM TRAIL Light Transmission: 36%

BZ OPTICS PHO Frames with Photochromic Bifocal Lens

Tonic makes each lens Optically Decentred which is important for viewing true depth and true distance

Oakley O-Frame 2

Hollis M3 Black Dive Mask Mountain Biking PRIZM TRAIL Light Transmission: 36%Hollis 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