In theory this is a great product - sunglasses that you can work out in. However, the quality and customer service is horrendous. I have already sent them back twice and Oakley insists that I will need to pay for them as they claim it has sweat damaged. First of all, I hardly used them. Secondly, why have an athletic product that can withstand sweat? What a bunch of morons.DO NOT BUY THIS PRODUCT UNLESS YOU DON'T SWEAT AT ALL!!!!!!