Julbo Bivouak Mountain Sunglasses, Zebra Lens, Matt Apple Green/Grey Total Coverage- Maximum protection in extreme conditions against harsh sunlight; Magnetic Wings - Coverage integration and optimum ease of use: with magnetic properties, added protection is instant 360 Adjustable temples, Stem ends bend in every direction, easy to wear and good hold when worn with helmet, beanie or simply alone Front venting- Natural front air flow thanks to the lens shape or mounting structure Grip tech- Inserts at stem ends for comfort and hold, does not stick to hair Zebra Lenses- This light-sensitive lens, developed for the Performance range, is ideal for mountain biking, trail running and climbing; Light-sensitive: the lens turns darker or lighter depending on the intensity of the light