Ordered a pair of glasses with photochromic lenses. Worked great. Ordered another pair one month later for wife. Barely changes color at all. Zinni said put them in freezer and they will get better! I tried it, didn't do squat. I sent them back, and they contacted me and said they had put them in the freezer and now they were great. Not. One pair gets dark, the second pair barley changes at all. No good in the sun. They offered me half my money back or the glasses back. Bottom line. Doing business with these people is like gambling. They aren't going to fix anything if it comes out wrong. Last time for me.