Bought this pillow for side sleeping and to help with my dust mite allergy. I did have a very hard time finding a 20x60 cover as most stores sell 20x54 and Mission Allergy does not sell any covers for the body pillow (that I could find). I decided to purchase a 20x54 cover and simply shoved the body pillow in there (it had a zipper closure). This worked out perfectly as it made the pillow even firmer. Now, in terms of comfort, the body pillow in itself is fantastic. But I found that by stuffing it into the smaller cover, the firmed pillow worked even better for me as a side sleeper.