Change the way you sleep with this Hamilton Pillow Top mattress from Spring Air. A 450 (Queen) Hinge-Flex Plus Knotted Offset Coil system is sensitive to the contours of your body while also extending the life of the mattress. A layer of Polyurethane Foam and a layer of High Resiliency Foam work together to provide unmatched firmness, support, and durability without leaving body impressions. A cloud plush feel is provided by the 100% Natural Talalay® Latex, which conforms to your body for support and pressure relief. Additionally, this mattress is kept comfortable at an ideal temperature thanks to the 4-way stretch knit fabric with Joma® wool and a high density convoluted foam. This pillow top mattress is perfect for back or side sleepers.