The Julbo Explorer Glacier Glasses are designed to provide the ultimate in protection, comfort and coverage. The lenses are polarized, have an anti fog coating, block 100% UV ABC and are photochromic: they change from a cat3 to a cat4 darkness which is ideal for high altitude mountaineering, open water fishing and other high glare situations. Polarized lenses with anti fog coating. 100% UV ABC protection. Photochromic lenses change from cat3 to cat4 darkness for glare. The temple tips are moldable to improve comfort and security. Retainer strap keeps glasses in place. Includes a hard case.