I have for sale two pairs of Julbo Dirt sunglasses. These are great glasses for pretty much any sort of outdoor activity, and have the Zebra photochromic lens that shifts from spectron 2 to spectron 4 darkness depending on ambient light. From the Julbo website:

The Zebra® photochromic lens darkens or lightens depending on the light’s intensity. It can change from a light transmission rate of 42% to just 7%! Its anti-fog coating, directly integrated via laser, guarantees maximum efficiency and long life. Zebra® is recommended for mountain biking, trail biking, running, climbing, skiing, riding and other outdoor sports.

These are white with yellow accents and zebra striping on the temple pieces. I have one pair NIB, the other is used. I have used these on Rainier, Denali, and other snowy/glaciated peaks with no issues for my eyes. They definitely get dark enough for high altitude climbing.

NIB pair with all stickers/documentation: $100 plus $6 shipping

Used pair: $60 plus $6 shipping

PM for more information, or respond here. Thanks for looking!