A uniform-density memory foam mattress applies the same resistance across the entire sleeping surface — adequate for lighter areas like the calves but insufficient differentiation for heavier zones such as the hips and shoulders, where pressure build-up causes discomfort and restricted circulation during the night. A 7-zone support system divides the mattress into bands that provide varying degrees of resistance corresponding to the different weight loads of each body region — heavier support under the hips and lumbar, lighter contouring under the shoulders and head. The DHS single memory foam mattress uses a precision-engineered 7-zone system within a 5-layer construction including a 2cm cool gel layer and 16cm HD motion isolation foam, measuring 90×190cm with a zip-off washable cover and 3-year warranty.