These sunglasses are the old standby that have been around since WW II. I throw the lenses away and have my perscription lenses installed. Even so, the frames are still cheaper than the opticians frames and they are sturdy and not unattractive. I've been wearing these for over 25 years. They hold up well and never go out of style. This is only my third pair of frames in all that time. I keep two pair so when it comes time for a perscription change I pop the lenses out of the old pair and have the optician put in the new lenses. In this case I ordered the wrong size frames and my lenses didn't fit. The supplier was very accomodating and swapped the frames at no charge. I'm a very satisfied customer.