These glasses are great. The polarization is comparable to the two pairs of polarized Oakleys I own. These glasses have a great classic look. I ordered the largest size lenses possible simply because they fit my face better. My only complaints are that these glasses are heavy. After sitting in the sun for sometime the nose-bridge will start to slip down as you start to perspire. The flex feature is convenient for easily slipping off your glasses in a hurry. It also adds some comfort as it relieves any pressure that would be caused by the ear-stems.