The Roam from Giro is a great value goggle for anyone looking for a medium fit. An Anti-Fog Coating will prevent fogging of the lenses, even when you are out on the mountain in humid or wet conditions. Giro's EXV (Expansion View Technology) creates a wide field of view and increased peripheral vision for added safety on crowded slopes. The Roam has an included bonus lens that is designed for flat light or nighttime riding. To swap out the lenses, the frames are fairly simple to pull apart, and then you put in the new lens, and snap the frame back together. Double Layer Face Foam with Microfleece Facing will feel soft on your skin and seal out the elements when you are riding in adverse conditions. EXV (Expansion View Technology), Cylindrical Thermoformed Lens, Yellow Bonus Lens Included, Double Layer Face Foam with Microfleece Facing, Anti-Fog Coating, Seamless Compatibility with all Giro Helmets, Race: No, Category: Adult, OTG: No, Special Feature: None, Helmet Compatible: Yes, Spare Lens Included: Yes, Goggle Ventilation: Medium, Goggle Lens Change: Moderate, Frame Size: Medium, Lens Shape: Flat, Lens Type: Non-Mirrored, Model Year: 2022, Product ID: 616936, Model Number: 7130179, GTIN: 0768686372742