The PREMIUM 4000 mattress uses one of the softest Memory foam's available. If you are looking for a softer mattress that allows your body to be absorbed deep into the mattress surface, this would be a great choice at the most affordable price. · Soft, supple feel · Low, Low Price · Reduces pressure points · Perfect for lighter body weight · Greater for extremely sensitive tissues, muscles · Overall 22cm thickness · 5cm of luxurious Memory foam · Hi Grade base foam · Removable & Washable quilted zip off cover · UK manufactured, meet fire regulations