I was stoked to be able to pick up a couple of extra lenses for my Demos. Both the clear and photochromatic are excellent. Lens changing is a little more fiddly compared to Smith but not too bad at all. They appear to be pretty tough and scratch resistant, but I am still very careful. Demos do not come with a case so I purchased a cheap hardshell case on Amazon. Works fine. Great glasses.
Easy to switch out the lenses on KOO glasses. These are perfect for the cloudy rainy days in the PNE