Top of the line REVOLUTION ZEBRA is built for ice climbers, alpinists and expedition climbers needing protection from biting wind and blowing snow and also the ability to see in ever changing light conditions. The REVOLUTION'S X-Y geometry is subtly different from other "ski" goggles allowing not only excellent peripheral vision but also a clear view of your front points. Key to the RZ's performance is the coated photo chromatic lens that changes in seconds to provide good vision in both bright and low light conditions and everything in between. Think how many times (while climbing) you move from sun to shade and back again... or the sun which was shining brightly disappears over the ridge. These versatile goggles feature Julbo's dual lens Air-Way System - designed to keep you fog free and moving - slow or fast, up or down. The REVOLUTION ZEBRA sports a general purpose Category 2-4 lens - plenty dark for high altitude - with 100% UV protection and 8-43% Visible Light Transmission. Storage bag included.