Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: A piece of the puzzle

I was skeptical at first, but this wedge pillow does indeed help with my acid reflux. I chose the 10" pillow thinking that the 7 inch would be too flat, and the 12" would be too high. I think I was mostly right. The 12" would have been way too high, but the 7" will be beneficial after the acid reflux is under control. So for now, the 10" wedge is helping to alleviate the nausea and burning that is common for GERD. It does take some getting used to, and it's best used sleeping on your back (I'm a side sleeper). I use my regular pillow right on top of it which helps if I end up turning on my side. The case is easy to remove and clean. Definitely get the convoluted foam. All in all, a very good product. And the shipping was quick. Four stars due to the price.