Bought this with little expectations. Had never tried one before, and wasn't sure of what I was getting. Am I glad I made the purchase? What a great product. I was using a couple old throw pillows that had gone flat a long time again, and knew I had to get something. This work so well, I really don't have the right words. Due to COVID, I've been in a "work at home" mode for almost a year now. I was sore from sitting so long, each day when I got out of my desk chair, it was painful to stand up. N...