Mountaineering Sunglasses
Mountaineering Prescription Sunglasses FAQ
What lens tint is best for high-altitude mountaineering?
Very dark: grey, brown or bronze at 5 to 15% light transmission, mirrored. UV is a third to a half stronger at altitude and snow doubles it. Photochromic lenses are good for changing conditions but never get as dark as a dedicated glacier lens. Above about 3,000 m you want category 3 or 4.
Can I get prescription in mountaineering sunglasses?
Most of these frames take it, in Trivex, which stays impact resistant in the cold. For the deepest wraps we'd suggest an insert or a flatter frame.
Mountaineering sunglasses or glacier glasses?
Glacier glasses are the darker, more enclosed cousin: 4 to 8% light transmission, leather or foam side shields, and some are Z87+ rated. Mountaineering sunglasses are lighter and less dark and rarely carry an industrial rating, which they don't need. Both take a prescription to about -6.00, more than a ski goggle allows.