Get the great night's sleep you deserve with the Danville Euro Top mattress from Mattress 1st. The 850 (Queen) Individually Wrapped Coil (IWC) System with Coil Encasement works with the contours of your body for optimal support throughout the entire mattress. Two layers of Gel Active® Gel Foam help distribute weight evenly while a layer of Hi IFD Support™ Foam provides additional personalized support. The top features a layer of Gentle Support™ Foam and Gentle Support™Aire that both provide extra comfort. The latter also helps regulate the temperature with a layer of EvenCool™ Fabric, keeping you cool all night long. This mattress is ideal for back and side sleepers.