I ordered these pillows at the request of my chiropractor and can honestly say that I havn't had to see him much since I started sleeping on them. The quality is standard foam, which is why I only gave it 4 stars, but the function is great. The pillow has two contour 'humps'. One is smaller than the other, and I recommend using the larger size for back and side sleeping. If you're a tummy sleeper these pillows might not be for you since they tend to prop you up a bit. Overall, definitely worth the $$!!!