Front Line MX is the latest addition to Oakley's High Impact line of goggles. With a Large to medium sized fit, Front Line MX is optimized for a wide variety of faces and is engineered to fit perfectly with most helmets. Designed with Oakley's Ridgelock Technology, changing lenses is quick and easy while still allowing for a complete lens seal to prevent harsh conditions from penetrating into your goggle. Discreet frame notches at temples provide compatibility with most prescription eyewear.