Bolle Nebula snow goggles with Polarized Lenses, which contain a polarizing film that blocks the horizontal reflected component of light, resulting in enhanced contrast so youll see terrain features and icy patches with improved clarity. Bolle Nebula goggles are equipped with double polycarbonate vented lenses, and are the only Bolle goggles to include this lens vent. The Nebula snow goggle from Bolle is available with a Citrus lens that is great for all-around depth perception, transmits 33% of visible light, and is ideal for partly cloudy to sunny days, or a Vermillion lens that allows for extra perception in flat, overcast light conditions, transmits 37% of visible light, and is also good for partly cloudy to sunny days. The Nebula goggle from Bolle features P80 Plus Carbo Glas (Anti-Fog / Anti-Scratch) that is applied to all Bolle double polycarbonate lenses. P80 Plus is the Bolle proprietary coating that provides maximum protection against unwanted lens fogging and scratching.