Great sunglasses. Seem to be polarized as advertised. Comfortable. Durable. I literally put mine on my head at dawn, no matter the season, and they usually don't come off until it gets dark. Salt andor chlorinated water pools seems to be their only kryptonite, but it seems to me all mirrored lenses have issues with that. I'm averaging about 9-10 months per pair being my primary shades but I'm hard on sunglasses. This is my 4th pair, I think. I will continue to buy them as long as they make them.