Back pain in a chair is usually a support problem before it is a spine problem. Most seats, car seats included, leave the lumbar curve hanging, and muscles spend all day making up the difference.
We carry three proven supports: the Apollo Back Support, the Obus Forme, which wraps the whole back rather than just the lumbar spine, and the Swedish Back Support, a firm classic that has outlived most fads. Between them they cover office chairs, lounges and car seats.
These are simple NDIS consumable purchases from the core budget. If sitting pain is part of a wheelchair or specialised seating setup, that is a different and more serious conversation, and our pressure and positioning cushions or a call with our pharmacists on 1300 216 888 is the better starting point. We will tell you which category your situation falls into before you spend anything.