FOX Main Drive Adult MX GoggleOunce for ounce, the Main Drive Goggles, are the best value on the market for side by side UTV adventures, and feature our Variable Lens System (VLS). VLS makes your goggles compatible with both injection moulded lenses (stock) and standard lenses within the same frame. With an expansive viewport, triple layer foam with a fleece lining, and tear off functionality, they are a heavy hitter that's light on the wallet. FEATURES: Best in class viewport