Large mattress, 12-inch large mattress (box set), gel memory foam and spring hybrid mattress

Mattress in a Box - The king mattress is compressed and smartly packaged in a box which is so compact that one person can easily carry it. Remove the mattress from the packaging and let it roll out on the bed. No installation is required. For best results, allow at least 72 hours for the mattress to fully expand. Mattress can be used with all bed frame, box springs, slatted frames, platform beds or metal grids. Pressure Relief - Individually Pocketed Coils work perfectly with Comfort Foam to ensure that your weight is evenly absorbed and distributed across the mattress, relieving pressure points and allowing you maximum comfort in any sleeping position. Motion Isolation for Better Sleep - High-quality individually pocketed springs and high-density sponge can effectively absorb the noise and vibration generated by tossing and turning during sleep, reducing the disturbance to the sleep companions, and offer sufficient support to your body.