SleepSoul Harmony Memory Pocket 1000 Mattress in a Box - 5ft King Size; With a combination of body-contouring pocket springs and body-moulding memory foam, the Harmony is perfect for those who want support and comfort. To provide a medium support, the layer of memory foam is sandwiched between two layers of pressure relieving and breathable convoluted foam. The high-tech layer of memory foam is designed to be temperature sensitive, reacting to the sleeper39;s body heat and moulding itself to their contours. Small in diameter, the pocket springs are tightly nestled together with each one housed in its own cloth sleeve, freeing them from any neighbouring spring. The load on one spring is not affected by any surrounding springs, allowing them to contour perfectly to your body shape and provide piston-like support. Totally independent, the springs are not affected by varying weights and body shapes, resulting in a system that supports directly at the point of contact. Vacuum packed for ease of delivery and hassle-free manoeuvrability to your bedroom, the mattress will fill out to its full and permanent size within a couple of hours. It39;s a one-side mattress that only requires to be rotated from head to toe.For complete peace of mind, it comes with a 10-year warranty.