Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Back pillow

I have a herniated disc and was in a lot of pain, especially sitting for long periods of time. Before I was to go on a long road trip, I asked my physical therapist if she knew of anything I could do to be more comfortable on the trip.She suggested this pillow. I tried to find it locally because my trip was coming up soon! But all the shops nearby seemed to be out of stock. I had enough time that I would probably receive it from Amazon, so I ordered online. And I was pleasantly surprised by how quickly this came.My therapist emphasized that the pillow shouldn't be used (in my case) fully blown up, but very floppy. So I blew it up and smooshed it down. It helped a great deal.