I feel this is a big win for me. I am a cashier and have been having a lot of trouble, especially the second half of my shifts. Well, my doctor signed off on the papers for me (which I was very nervous he wasn't going to do) and I get to use it when I need it. I feel bad a little bit because some days are better than others and I don't need it as much and feel like I should be using it if it's there. I am severely obese, which I am working on with a dietitian and now physical therapy, and I just feel so great about this I had to share it with someone.