I love Smith sunglasses, I had a pair several years ago that lasted for 4 years, I wore them rock climbing, doing water sports, driving, and doing lots of heavy contact activities, and they barely got a scratch and didn't break. The ended up breaking because they got shoved to the bottom of a book bag and a textbook jostled on top of them just right causing an earpiece to snap off. I bought this pair to replace those. I've only had them a couple of months, but I'm just as satisfied with them as I was the last pair. They have excellent shade ability and they are super strong, I'm positive that as time moves on, I'll continue to be satisfied. Not to mention they are a great price!