Lasted about 12 hours. The first time I wore them one arms broke closing them.  EDIT: Well, it's been a year since I left this and I have received several impersonal robo-emails from them suggesting that if I remove the negative feedback, they will honor their warranty.They even provided step by step instructions for removing feedback. Wow. Not sure that they really understand how a warranty works. I really didn't expect much from a pair of glasses at this price point and yet somehow, I was still disappointed. If they would have just shipped the replacements no questions asked like any decent company that stands behind their product would have done they would have gotten a better review...