I bought the Aviator sunglasses and received them about a month ago. I wore them 4-5 times in about a month and one lens keeps popping out. I have tried to tighten the screw with loctite and the threads in the glass frame will not hold the screw tight. I sent an Email to Warby Parker last week and have not received a response. There were not much cheaper than my wifes sunglasses at the optometrist's office. I will not ever buy from Warby Parker again and I will pursue getting a full refund.