They are light-weight & they stay in place/don't slip through your nose when you are moving around! Really loving it and finding any excuse to use it.
TL;DR: Get them. They are worth it. Like in the words of Ron Swanson: "Son, you should know my recommendation is essentially a guarantee."
I am not a big sunglasses person. They tend to be heavy, or the screws just get loosened after a while. Plus I wear glasses so switching between them is a pain. But these NO.2 makes it worth it. They are light weight, durable (dropped on them and stepped on them after a couple too many whoops! bent one of the legs but I just bent it back like waaaah?!) and just over all comfortable! Like, even my glasses feel tight behind my ears. Really considering making this pair of sunglasses into actual glasses cause it would be so dope!