The 10” thick Naturcomfort® is constructed with a core of Eliosoft® which you you a medium-firm feel. Naturcomfort® delivers a high level of anatomic support which provides for a natural alignment of the spine and improved blood circulation. The non-removable cover of Lenpur®, a patented, highly absorbent, and natural cellulosic fiber fabric, is quilted to a layer of Memoform® on both sides of the mattress.