With style and luxury combined, the coolmax sleep system incorporates advanced premier pocket springs, natural talalay latex and luxury lambswool to give the most comfortable sleep possible. Natural talalay latex can help provide astma sufferers with relief from the symptoms of dust mites. Supreme comfort is but one of the benefits offered by talalay latex. It is hypo-allergenic, increasingly important for allergy sufferers. Its pressure relieving properties offer relief from back pain and aching joints. It self ventilates, thanks to its natural interconnecting cells and it will not sustain bacteria. Talalay latex is a natural product and should not be confused with other types of synthetic latex, which are man made imitations. For convienience the mattress does not need to be turned over.