The D1 Ski and Snowboard Goggle from Dragon is essentially a larger version of the D2, so that means a wider range of vision and a more comfy fit on the face as well as OTG ‘over the glasses’ compatibility. The lens is a polycarbonate cylindrical style lens that has Dragon\'s Super Anti-Fog Lens with 100% UV protection, basically it’s a very high quality lens. This model comes with a bonus lens so you can have a lens for flat light storm days and one for bright, bluebird days. Protect your eyes in style with the D1 from Dragon Dragon D1 OTG Goggle Features: Lumalens® Optimised Colour Technology Helmet Compatible 100% UVA/UVB Radiation Protection Thermal-Formed Cylindrical Lens Super Anti-Fog Technology Fleece Lined Dual Foam Large Fit