How high should a pillow be?

There is no single ideal height: it follows from your sleeping position, your shoulder width and the firmness of your mattress. Side sleepers need more filling to bridge the gap between shoulder and head, back sleepers do well with a medium height, and stomach sleepers sleep best on the flattest pillow possible. If you sink deep into a soft mattress or topper, your pillow can be considerably lower. Not sure? The Snow Cube offers adjustable support.