Breaks within days. I purchased 2 of these. Both broke within 7 days of use - in same spot above right eye. I later purchased very similar sunglasses from a different retailer and the same exact breakage in less than 7 days. I'm not sure how they all got such high reviews.... I have purchased cheap black sunglasses for many years (20?)... I understand they break... but maybe after a year? not within a week