The problem of side sleeping is that you literally sleep o directly, pushing down into one shoulder. You need a super thick pillow between the knees and the back. If youdon't really want t an additional one, you put one uerneath your hands so your elbows nt hyper extended. And lastly, i's a huggy, huggy pillow. It's the softest pillow you have, and you hug and you hug the sing.