Slip the Julbo Outline Zebra Light Photochromic Sunglasses under your helmet, hat, or cap for a secure fit before you head out on an endurance activity of your choice. The combination of the adjustable temples, temple pads, and adjustable 3D Nose fit will ensure a secure fit that keeps the lenses perfectly in front of your eyes. The Zebra light photochromic lenses will then ensure crystal clear optics by adjusting to changing light conditions, preventing fog, and repelling oil and water. This combination of fit and clarity will keep you focused on the job at hand so that you can reach new personal bests.