Serta 4-inch Memory Foam Mattress Topper with Contour Pillows (Queen) 3 Year Manufacturer Warranty - Set includes one mattress topper and two contour pillows Mattress topper measures 4 inches thick - Visco-elastic memory foam Memory foam is resistant to dust mites and is naturally antimicrobial Temperature-sensitive and adjusts to distribute weight evenly Reduces pressure points that cause tossing and turning