The quick review: love the lenses, hate the frame.<br />The polarized, mirrored lenses are very good. They are crystal clear, do not distort your vision and make colors pop out in everything you look at.<br /><br />The carbon fiber frames are another story. They do not grip well and, even though the glasses are extremely light, they constantly slide down the nose. Unlike metal frames which can be bent under light pressure, there is no way to adjust the tightness of these frames. I've had them slip off and fall to the ground on two occasions. Luckily the lenses were spared any scratches. I contacted the manufacturer for advice and all I got was a generic email which didn't address my issues.<br /><br />For expensive glasses, they are disappointing. I do wear them a lot, and they look fantastic, but now I'm constantly checking the positioning to avoid another drop. If the manufacturer could advise me how to overcome this I'd upgrade my score.