Used these for a month long international trip and overall love them! So great for traveling minimally, easily fits in my sling along with a wallet, passport, phone. They feel durable but thin and flexible. Couples negative things: I find that the nose piece and hinges catch my hair, especially if I flip them up to rest on my head when I walk inside. It pulls my hair when I try to put them back down on my face so I end up fully putting them away each time which if you go in and out of sun or clouds cover it gets annoying that I can’t just wear on top my head for a couple minutes. Also worried the lens will get scratched from sliding in and out case of there is sand or dirt on them since it’s a tight fit, I’ve just continually wiped the inside of the case to not scratch.