Given the task definition and input, reply with output. Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

I had very bad hoarseness from acid reflux. Prescription medicine wasn't helping. My doctor advised elevating the head of the bed with blocks but that was not practical. I showed my doctor a picture of the prop up pillow and he said it looked to be the correct dimension. Within a couple of days after receiving my pillow my hoarseness was gone! Yes, the pillow appears expensive but it is much less expensive than buying an adjustable bed. I don't use the neck roll - I prefer to use my own memory foam pillow. My doctor said the back roll is to help keep one from sliding down the pillow. I strongly recommend this pillow to anyone with GERD/acid reflux.
Positive