Oakley makes gear for those who tend to pursue life at unsafe speeds. A lot of them were born with imperfect vision, as though Mother Nature knew they would run riot and tried to put the brakes on their adrenalin-fueled exploits. Nice try, mom. Oakley engineered the PROVEN OTG MX GOGGLE to fit over most prescription eyewear frames, so two-wheeled gladiators with eyeglasses can enter the dirt arena and keep victory in focus. This OTG edition amps the comfort factor with a triple layer of face foam that pulls away sweat. If you?ve never experienced a true anatomical fit like this, you don?t know what you?re missing. As far as optics go, this goggle gives you everything you expect from Oakley ? right down to the anti-fog coating on the scratch-resistant LEXAN lens. We added mounting posts for your tear-offs and enough venting to eliminate the steam bath of competition. It?s hard to believe such a lightweight design can be so durable, but O MATTER frame material helps this goggle achieve a full EN 174 impact protection rating.