Don't buy these
V;one. they are really badly made and fall apart no matter what the company claims. it happened to me and several pilot friends after only a couple of days. For one friend it happened in flight on finals at the apparently indestructible joints and the frames and wonderful lenses got jammed under the right rudder pedal- a go around had to be done- and a chirp report had to be filed. the sunglasses are consistently with todays aviation by vitue of their ridiculous price. but that is the closest it should get to being a pilot product. I want my money back and I wouldn't recommend them to anyone. They also look dated and the model on their website is RAF- Rough as FXXX.