Medium Firm Support for Ultimate Comfort: 14inch queen size mattresses memory foam mixed with multi-layer foam and independent spring support system ensures that your weight is evenly distributed from head to toe and provides targeted support to fully relax muscles and enjoy a good sleep experience. Breathable and Healthy: The 14inch mattress is made of high-density first-class thermal material, which is comfortable and breathable, and can discharge the steam and sweat from the contact surface between you and the mattress, so that you can keep your body comfortable and dry during sleep. The mattresses independent pocket spring system can Enhanced air circulation prevents trapped heat for a cool and comfortable sleep. High-quality Top Sponge: Our queen size spring mattress is made of high-quality knitted fabric, multi-layer high-quality sponge keeps you away from back pain. All memory foam is CertiPUR-US certified and tested to be free of harmful substances. Quiet and Independent Spring: Built-in high-quality independent pocket spring and slow rebound sponge, which can effectively absorb the noise and vibration caused by turning over during sleep, do not disturb your companions, and sleep peacefully. The support system consists of hundreds of independent pockets of Composed of spring coils, it has excellent shock absorption and elasticity, and can effectively adjust the quality of sleep. Easy To Use And Set up: Memory foam hybrid mattress is compressed, rolled, and shipped in a box for easy set up. Please allow 24 - 72 hours for your mattress to return to its full shape after opening the mattress. It is compatible with all frame types, including box springs, floors, slatted bases, flat platforms. Assembled in USA - High Quality 14Inch Queen Diamond Innerspring Hybrid and Cooling Gel Memory Foam Mattress, Pressure Relief, and Motion Isolation, CertiPUR-US and Oeko TEX Certified