Well, I was really looking forward to using it, and though the heat/cold/gel pack I am able to use, but the cushion itself is just way too thick to be usable in any of my chairs. It caused back pain instead of relief, so now they are both sitting on an unused chair awaiting the chance to find a chair I can actually use them on. The gel pack I do use often, and it does help, but just reduce the thickness of the pad by half at least.