This product has been carefully designed with a combination of a European-engineered open coil spring system with a layer of the new innovative natural foam memory fiber, with a depth of 7.5” inches (18cm approximately). The open coil spring system allows the weight to be distributed evenly across the mattress to provide extra comfort and support for the sleeper for a comfortable night’s sleep. The mattress has a micro-quilted cool touch and a classic straight-line design top panel with a layer of cutting-edge visco-elastic memory foam, the foam softens when you lay it and maintains the body at a cool temperature. The memory foam adapts and shapes to the contours of your body, relieving pressure from building. The mattress has hypoallergenic and anti-dust fillings and an anti-bacterial feature making the mattress a cleaner healthier sleeping environment for the sleeper, and great for asthma sufferers. With our in-house technology, the mattress will come perfectly vacuum-packed, rolled, and boxed for the convenience of the customer. We do recommend once you have unpacked the mattress leave it for up to 48 hours so the mattress can re-size to its original.