Think of these frames as a bigger serving of the classic D2s. The D1 has been updated and upsized with a larger fit resulting in even wider peripheral views through its cylindrical lens. The combinations of high-performance dual-layer face foam with microfleece lining plus Super Anti-Fog means comfort and clarity no matter what conditions the mountain throws at you.LUMALENS is a colour optimized lens technology offering ultra high-definition optics across the entire spectrum of light conditions. Engineered to optimize and improve visibility in all environments, Dragon’s exclusive LUMALENS Technology delivers enhanced colour vividness, increased contrast, precise depth perception, and reduces eye fatigue for optimal performance.Frame ColourInfraredLens ColourLumalens Red IonizedLight Transmission: 23%Light Conditions: Mid/brightLumalens RoseLight Transmission: 32%Light Conditions: Flat light/overcastDescriptionOver the Glass (OTG) CompatibleThermal Formed Cylindrical Lens with Super Anti-Fog Coating 100% UV ProtectionTriple Layer Face Foam with Hypoallergenic Micro Fleece LiningHelmet Compatible