Good: I am a repeat customer, placed 5 orders from them for myself and my family. Always very courteous and fast shipping. The glasses are authentic as I have many frames and know the difference.. Bad: nothing I can complain about. Improvements: everything was great. Other: I love this merchant have ordered many frames from them before, always got what I wanted, the 1 time they didnt have the frame I ordered they called me right away and told me it would take an extra 4 days to receive, I agreed and received my frame a week later, excellent!!!!.