I really like this cushion. I received an email from the manufacturer even before I got the shipment (which was Prime fast). It holds it’s shape well and is obviously well made. It’s taken me a couple days to figure out where I want to place it along my back to get the best relief but I think that’s true for everybody. I have it in one place on the couch and another in my desk chair. I have not used the strap to hold it in place since I’m moving it daily. I may have to buy another one, just as a convenience to myself. My only negative would be that the bottom feels a little too big for me – meaning it pushes my spine out a little farther that I want. That’s why I’ve had to figure out how to position it. But it is probably perfect for someone else. I have had back surgery and I get relief from the residual pain by using this product. ..More