I have issues with my neck so I need a pillow that is firm and thick, but most are either so firm they hurt my ears or so thick they over extend my neck and make things worse. This pillow (so far) seems to be one of the best I’ve found. It is fairly thick without being too thick, and it is firm but still soft enough that it doesn’t hurt my ears. I am interested to see if it goes flat, and how quickly, but for the past few weeks that I have used it I have been very pleased. I would definitely recommend this for side sleepers who need fairly firm support. On occasion I also sleep on my back too and there have been no issues there either.