The Serta Perfect Sleeper Wesbourough Euro Top Innerspring mattress, combines some of Serta's latest comfort technologies with a state-of-the-art steel coil innerspring support system. These mattresses are an ideal solution for those who prefer the look and feel of a traditional mattress with the benefits of advanced comfort and support features. The Wesbourough Euro Top is a plush mattress with extra soft cushioning and a layer of Cool Twist® Gel Foam for added pressure relief and a cooler sleep. This is a good mattress for a back or side sleeper.