These are not genuine Oakley Glasses. They are not durable and do not fit correctly. They do not have the same labeling on the inside of the arms as a real pair of the same exact glasses I purchased one year ago at a retail store. They fell off my face the first time I’m bent forward. One lens popped out of the frame and was severely scratched from falling 4’ onto a wood floor. I would not recommend purchasing from this seller. And they have no Z87 stamp.