Oakley MX O-Frame Adult Dirt Off-Road/Dirt Bike Motorcycle Goggles Eyewear - Black/Clear / One Size Fits All 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 Minimized reflective glare via interior surface texturing Convenience of 2-pin attachment system for tear-offs