The Scott Vapor LS is the perfect goggle for skiers looking one a one-lens-works-for-most-light-conditions. The Light Sensitive Lens utilizes Photochromic Technology that can adapt to the amount of sunlight to either lighten or darken to improve your vision and clarity on the mountain. The RAM Air 2.0 and ACS (Air Control System) uses air intake and exhaust that moves air through the OptiView Double Lens to prevent fogging. Three-Layers of Face Foam keep a snug seal across your face and keep you comfortable. Scott's Amplifier Lens Technology delivers better clarity and contrast that helps you see the texture of the snow better than any lens Scott has produced before. Light Sensitive Lens Technology, Ram Air 2.0 Air Intake, Optimized Ventilation, 3 Layer Face Foam, Spherical OptiView Double Lens, Amplifier Lens Technology, NoFog Anti-Fog Treatment, ACS (Air Control System), Medium to Large Fit, No-Slip Silicone Strap, Race: No, Category: Adult, OTG: No, Special Feature: None, Helmet Compatible: Yes, Spare Lens Included: No, Goggle Ventilation: High, Goggle Lens Change: Permanent, Frame Size: Medium/Large, Lens Shape: Spherical, Lens Type: Mirrored, Photochromatic, Model Year: 2020, Product ID: 588512, Model Number: 271809-0001341, GTIN: 0192820051895