ObusForme by Homedics OF-4P The 4 Position Pillow

Fine - exactly as it says on the tin

If you are looking for a firm little pillow, I would recommend this one. I have a few similar pillows, but this one is definitely the most firm. It offers good support and is comfortable.Update: Since I first wrote this review, I have purchased another one of these pillows for my husband. He threw his back out and tried using my pillow. He found it to be very comfortable and a help with his back.

Finally have found the perfect thing for my neck - cannot sleep if my neck is not supported properly.

This product's description is inaccurate. It is actually 18 x 7.75 x 4 inches, not 20 x 8 x 4.2 as stated. That missing 2 inches in length could make a difference under one's knees. It certainly will not meet my needs.