I was excited to receive this cushion. I took it to work and places it in my chair. No more back issues for me! The cushion is hooked to the chair with a strap of elastic. That is the only thing that I would change. I would make the strap adjustable to be able to move it higher on the chair. The cushion is very supportive for the lower back. It has stayed firm and supportive. I would definitely buy this product again.