For those who have to sit, I'd recommend http://www.amazon.com/Original-McKenzie-Lumbar-Roll-Standard/dp/B000H48WYA http://www.amazon.com/Original-McKenzie-Lumb

For those who have to sit, I'd recommend http://www.amazon.com/Original-McKenzie-Lumbar-Roll-Standard/dp/B000H48WYA http://www.amazon.com/Original-McKenzie-Lumbar-Roll-Standard... (which was recommended by my Dr. and physical therapist after I bulged a disc trying to He-Man a kids playground up onto a truck bed) I carry mine between my desk and car. Makes a big difference in how long I can drive