The SERTA Cooling Mattress Topper, Memory Foam, THERMAGEL, 3", Queen, Blue adds an extra layer of comfort that will help improve your quality of sleep. Infused with a breathable, cooling gel and engineered for comfort, this mattress topper conforms to the sleeper’s unique body shape to provide pressure relief and support. Whether you are looking to extend the life of your mattress or simply change the comfort level, this SERTA 3 inch mattress topper will help breathe new life into your sleep!