I’m using this on a computer chair, it was getting too painful sitting down for hours on my chair and I had tried many different items as a cushion (blanket, pillow, etc) but they all never quite did the job as pain would always develop in certain spots. This item is 100% memory foam without fillers (opened it up and checked to be sure). If you try buying a memory foam pillow or mattress you’ll find they are pretty expensive, so that does explain which this cushion isn’t at a cheaper price. I’d have loved a magic imaginary cushion that I could just place in there and be 100% free from discomfort or shifting my weight around, but that is probably too much to ask.