The D1 OTG has been sized up for Over-The-Glass compatibility, resulting in even wider peripheral visibility and the ability to accommodate those who wish to wear glasses. Coupled with the premium features like our Lumalens color optimization, and Super Anti-Fog coating, the D1 OTGs throwback flat styling, giving you a unique look on the hill. With unrivaled style and uncompromising performance, the D1 OTG can handle whatever situation you can throw at it.