Fox The Encore Main MX GoggleFox The Encore Main MX Goggles are constructed of light weight (TPU) two part urethane based O-matter that is both flexible and impact resistant. Increased view port for unparalleled upward, downward and peripheral vision. 100% optically pure Lexan lenses with state of the art anti-fog treatment. Triple-layer face foam maximizes comfort and sweat control for maximum moisture wicking strap. Woven nylon helmet strap features timeless Fox head icon and red accents.