Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: Good idea, but does not work very well.
Review: The interchangeable cores for the pillow are a good idea, but they do not work very well. The pillow material compresses, and you are left with no support (for the softest core) or a hard cylinder that does not support your neck very well (medium and hard cores). Also, the pillow opens to put the core in and does not close completely.
