On the second pair, about to buy the 3rd since they are great. These frameless Bolles seem to break apart a bit easier. But I guess you can expect that when kids steal them and leave them to be driven over, or a motorcycle falls on your pack and smashes them. I test gear for www.nunatakusa.com, the mountains are especially ahrsh on gear, sunglasses included.
Pros: lightweight, clear optics
Cons: easily broken, like most glasses
This review was written in the old system and had content requirements that are different than reviews written today.