Smart concept!!! The frame is sturdy even though it is very thin. The looks, wearing movie theater 3D glasses, but it is ok because of the convenience of carrying and does not take up the room in my EDC chest bag. Added a pair of extra nose pads (I think they are medium size) are nice. I wish to have an option for larger size nose pads for low-nose bridge people. Minus 1 star because of the silicon sleeve (case) that comes with it. It is super tight. Putting the glasses in and out of the sleeve is so difficult. I see that the concept is minimalist, but it's useless. Roav should make it slightly larger and add microfiber lining inside the silicone sleeve. So I can store the glasses with a cleaning cloth to protect them from scratches and make them easy to put in and out.