There's no age limit on breaking the laws of physics, so these youth-specific designed goggles take advantage of reduced cranial geometry to bring the protection of Oakley's MX O FRAME to smaller faces. The optically pure LEXAN® is treated for scratch resistance and mounted in the perfect arc of a circle for maximized clarity. The durable urethane frame stays flexible even in cold weather, and Oakley added an extra layer of face foam to optimize comfort and fit. Non-slip silicone keeps the wide, adjustable strap from sliding off your helmet. Engineered with closed-cell face foam to keep fine particles from infiltrating the frame and assaulting your vision. Flexibility even in extreme cold via urethane frame construction. Glare reduction and tuned light transmission of Iridium® lens coating (optional). Comfortable and secure fit of wide, adjustable elastic strap.