These glasses are very well made...not Ray-Ban quality, but very good. They're a tiny bit small for my head but are comfortable anyway since they have spring hinges. I would buy again. I also bought the AV5 which are a little bit smaller than these. My lashes actually touch the lenses of the AV5 but do not touch the lenses of the AV6. I believe they will last a longtime if they're cared for.