The Hemisphere from Zeal Optics is a fantastic goggle for anyone looking for a medium size frame and a traditional look. The Spherical Polycarbonate Lens has a shape that matches the curvature of your eyes to increase your field of vision and eliminate distortion out of your peripherals. Upper and Lower Venting above and below the lenses along with Everclear Anti-Fog Treatments help keep your lenses fog-free and clear each time you are on the mountain. Zeal's Optimum Lens Technology delivers excellent color filtration for added clarity, heightened color and enhanced definition of the snow and terrain around you. Optimum Lens Technology-Delivers color filtration for added clarity, heightened color and enhanced definition., Everclear Anti-Fog-Keeps lenses clear of fog., Upper and Lower Venting-Venting above and below the lens circulates air., Medium Fit/Medium Coverage, Spherical Polycarbonate Lens, Race: No, Category: Adult, OTG: No, Special Feature: None, Helmet Compatible: Yes, Spare Lens Included: No, Goggle Ventilation: Medium, Goggle Lens Change: Permanent, Frame Size: Medium, Lens Shape: Spherical, Lens Type: Non-Mirrored, Model Year: 2022, Product ID: 922071, Model Number: 11635, GTIN: 0685559116350