Because of rubber nose pads and rubber grips behind ears the glasses do not stay in place. if you use the included sunglasses cords they do help to keep the glasses in place since the cords have rubber grips where they attach to the glasses frame at the ear tips. Long term wear and use are unknown at this time as I have had them less than a week. Polarization seems adequate time will tell. They are lightweight but seem sturdy enough. I plan to keep them just would have liked to them to have the rubber pads at the nose.Nice look, light and good frames. I like the fact it comes with holder straps and a cloth carrying bag rather than a hard plastic case I'll end up throwing out. Unfortunately, they tend to break easily. The frame around the lenses in the lower half, where it's thinner, broke on both my pairs. The first time I figured I was too rough, the second I was careful not to put any undue strain on them and it still broke. Also, the rubber fastener that goes around the glasses to hold them around your neck broke.Great price!! They look great!!!That are almost like kids glasses, run very smallGood glass for sun reflection but cheap frames. Broke after one week of normal use.This is a pretty good set. It comes with two pairs of polarized sunglasses, two pouches, and two cleaning cloths. In terms of basic function, I'd say these work as expected. They seem to be of average quality for a less expensive pair of sunglasses. They haven't scratched after a month or more of use, so that seems pretty good. In terms of feel, they feel a bit bulkier than I expected, and the don't fit well with a baseball cap (I think because of that noted bulkiness). The earpieces are thicker than my other sunglasses, and with a cap on they put pressure on my ears; I end up having to put the ear pieces over the top of my cap, which isn't particularly comfortable either. If you don't wear caps, this may not be an issue for you, but it makes these less ideal for me, especially if I hope to wear these for fishing. I love that they're polarized, which is great for fishing but also for driving.These are great glasses. They are comfortable and they look great on! They block the sun very well.