I have spent the last year largely working from home. My home desk chair is adequate, or was, before I started spending eight to ten hours a day on it for three or more days in a row. My office chair had never caused back pain, and I'd previously not spent enough time in the chair in my home office to notice that it was uncomfortable. I didn't want to spend the money to get a new chair, and I honestly didn't even want to spend the money to buy these cushions. I kept telling myself that I'd be back in office soon enough, and the purchase would be a waste of money. I was wrong. These cushions are great!! It is like having a custom fit chair in my home office. I now have no back pain, even on long days.