For the price, this is an excellent buy. Since I have been sleeping on this cervical pillow, I have had no aches or pains in the morning. I tried the Tempur Pedic cervical pillow which is more costly, but, I returned it because the target pillow does the job. Well worth the buy. The pillow is firm and forces you to sleep on your back, though, it is possible to sleep on your side and still have a restful night.
The one and only other review of this pillow described it as "firm" which means it is as hard as a rock. It is workable if you only sleep on your back, still like a rock but does provided good cervical alignment. Sorry I spent my money on this pillow and the search for a good cervical pillow continues.