This support was recommended by my P.T. for my extremely fragile and painful lumbar spine that has had three surgeries, the last one of which went totally wrong. I had been using an Obus Forme back support for at least 20 years. This new one is ten times more supportive and promotes good posture. I use it on my dining room chair where I eat, use my laptop and do paperwork. I also use it when I am instructing my chair Strength %26 Balance and Chair Yoga classes. I can't begin to tell you what a positive difference it makes. The outer casing can be washed to keep it clean. You can use it on your car seat also, but ONLY if your headrest can come forward enough so that your head lightly touches it. If not, DON'T use it because you will get whiplash if in an accident.