The Julbo Explorer Glacier Glasses are designed to provide the ultimate in protection, comfort and coverage. The Spectron 4 lenses have an anti fog coating, block 100% UV ABC and are a cat4 darkness which is ideal for high altitude mountaineering and other high glare situations. The temple tips are moldable to improve comfort and security. Retainer strap holds glasses in place. Spectron 4 lenses have anti fog coating and are cat4 darkness for high altitude mountaineering and other high glare situations. 100% UV ABC protection. Moldable temple tips for comfort and security. Includes a hard case.