These glasses are definitely smaller than I expected them to be, thanks in part to (mass)drop and every other distributor not having any pictures of people wearing these shades. I'm still glad I pulled the trigger on these, they're a unique pair of glasses without making you look like you're trying too hard to make a statement.
The arms are sturdy enough, but I've definitely noticed them loosen over time, it's nothing a little screwdriver-ing down the line won't fix though.
Lastly, the arms have ridges carved into the plastic (or whatever material these specs are made out of) on the end where they rest against your head, which I wasn't expecting. It hasn't been uncomfortable for me but might for other people. They certainly help keep them in place though!
All in all, a very solid pair of sunglasses that I've enjoyed wearing this summer and have even received a couple compliments on!
Eta: I've been using these as driving sunglasses, but I wouldn't really recommend them for that. The frame is small enough that it sits in my peripheral a lot, which obviously is not ideal for driving. Still not enough to get me to switch to another one of my pairs though