This One-Sided Mattress has 1 1/2 inches of Quilt Foam and 1' of Support Foam atop a Bonnell Innerspring Unit, making it a style suited to side sleepers. This mattress would be great for a cabin or guestroom where a good value bed is needed. The no-flip design of this mattress gives you the benefit of having all of the comfort layers between you and the spring unit for maximum comfort. Forget the hassle of flipping your mattress, but remember to turn it occasionally. Box spring not included. The Galileo Queen Euro Top Mattress by Corsicana