gET A gel cushion...or a air cushion..I use both stacked with that special non-slip material between so we don;'t slip off

All depends on where the pain is. If you have a P.T. ask them; if not consult a radiologist or your neuro. When all else fails, go to a medical supply store like Binsons or Wright-Phillips and ask a tech at the store. They usually know which cushion will work best.

My client who is a paraplegic said "i like my cushion - stimulite"