I have spinal stenosis. I wasn't going to have toilet aid. Ego? Maybe. After really bad flare up I had a toilet frame. It helped, but my toilet was still to low. In desperation I ordered this seat higherer. CHANGED MY LIFE. Best thing ever.it is just placed on toilet.fits perfectly. If I have visitors just lift it off. If I could travel,I could take it with me. I'm delighted.im hurting much less. The firm are great to. They are very helpful. Don't suffer, get one.