The R1 is a new frameless goggle with top level features. Armoured venting keeps snow & wind from damaging the fragile foam of other goggles whilst ensuring enough ventilation to keep the goggles fog free and clear. Swapping lenses is as easy as pulling the lens away from one side and pressing it back in. Not quite as quick as the Dragon models with Swiftlock but a huge step up from the traditional methods. Over the Glass (OTG) Compatible Patented Frameless Technology Thermal Formed Cylindrical Lens with Super Anti-Fog Armoured Venting 100% UV Protection Triple Layer Foam with Hypoallergenic Micro Fleece Lining Silicon Strip Backing Helmet Compatible Medium Fit Number of lenses included: 2 Dragon R1 OTG Low Bridge Fit Ski Goggles