The cat eye frame is an iconic style from the 50¿s. These are a great example of what fun they can be. These brown frames have a great etched or carved look to them. They measure 13 cm across and the arms are approx 14 cm long. I can see a 5.5 mark on them, but cannot read the other markings. They still have prescription lenses in them, but I think they would be the cutest sunglasses with a quick exchange for tinted lenses.