I only used these glasses during the time I played tennis, not for everyday wear. I play tennis 4 or 5 times a week. Both lenses cracked at where the nosepiece is screwed into the lenses in less than 30 days of having the sunglasses. They are not at all durable and were a major disappointment! The only positive I can think of is they are lightweight, comfortable and look good. (Beware as an athlete, looks aren't everything!) I will definitely not replace these with the same model.