I don't know much about glasses, so I'm not sure about the details. There might be issues like distortion, but I can't tell. The JINS case has some dirt and scratches. It feels used, but there's no noticeable dirt, just scratches. For those who don't mind if they can be used. Set of 3 with JINS cases. - Brand: JINS - Model: Relaxing - Model: Classic - Color: Black/Purple - Accessories: With case - Quantity: Set of 3 Thank you for viewing.