Featuring a continuous coil spring system, this mattress combines unique technology with a quality finish and a sumptuous pillowtop to offer comfort and support for people of all shapes and sizes. The spring system offers edge-to-edge support with no roll-together, meaning less partner disturbance through the night. Its zoned structure with a firmer section in the middle provides spinal alignment to help aid good posture and relieve pressure build-up. This is a hypoallergenic mattress, made to offer a firm feel great for those who sleep on their side or back. Silentnight Size: Super King (6')