This is my second pair. I normally don't buy the same pair of glasses twice but I lost my other pair while in Cancun dodging heavy waves. Hope whoever found them can get good use out of them as I did. I'm sure they probably still looked new coming out of the ocean. Anyway, I would normally not buy the same thing twice, but the quality and utility of the hook will not compare to any sunglasses being made and sold for a similar price. If you are thinking about whether it is worth it, get it and try them out-you will not be disappointed. If you don't like them, they make it easy to try something else or return them. I kind of wished I bought more than one pair when I bought them a while back, but fortunately, they gave me a coupon code for a discount since I lost my first pair. Only minus is, the arms are titanium, so they don't really give/bend like acetate or softer metals. not a big deal since they still hold just fine without a custom bend/fit around your head if you need that kind of adjustment. These should be standard issue for US Military because these are built to last.