These are pretty good.  I have always bought and used clip-ons for outdoor work and driving.  These are well-made.  The clip device is bigger and better than other brands.  I bought a pair and they came packaged in a fitted case with a cleaning cloth.  They have a sticker saying they are polarized.  The price for two is way below other brands.  I just wish the vertical height was about 3/16 inch higher to cover more of my glasses.