Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Invacare Memory Foam Pillow

The memory foam in this pillow must have remembered a rock. It was way too thick and very hard. Even after cutting the foam in half there was no improvement. The foam is in the trash can now but I kept the cover and filled it with soft polyfill. It works great and I use it nightly. I paid too much money just to get a cover.