Great for lower back pain
I ordered this after suffering a back strain at work which made it painful to sit for prolonged periods. The purple seat cushion took pressure off my lower back, and it has since made a noticeable difference in my back pain.  The only complaint is the "pillowcase" that it comes with, it is nylon like material, so if you use it on a leather or a faux leather chair it slides around a bit, but you can get around this by just not using the case. Overall, I highly recommend it.
Rating: 5 stars