Over The Glasses (OTG) Goggles are designed for wearing over prescription glasses Integrated Revolutionary Air Management (RAM) System dictates the flow of air coming into the goggle through the top spoiler to ensure lenses don't steam up and stay clear Frame is constructed of soft Thermoplastic urethane (TPU) with UV blockers to help maintain flexibility, even in cold temperatures Outriggers (strap attachments) are made of Polyamide (nylon) NoFogĂ– Anti-Fog lens treatment Polycarbonate lens TruView single lens blocks 100% of harmful UV rays Made in the U.S.A.. GOGL SPLIT OTG WH CLR-WK