Enjoy a comfortable night's rest with the Serta SleepTrue Carrollton Firm Queen Mattress. It features a layer of Cool Twist gel memory foam over Serta's legendary support system. This blend of cooling and support is designed to provide comfort and relieve pressure. The tight top mattress combines quality comfort materials with a traditional steel coil innerspring system. The system includes one continuous row of coils for support while reducing motion transfer. The premium all-foam system gives a contouring, yet supportive feeling. The Serta mattress is available with or without a box spring and in a range of sizes.