It all started with a seat cushion given to me (first author) by a former colleague 12 years ago. This particular cushion, said my colleague, was not a regular cushion but a professed anti-decubitus cushion and asked me if I had use for it. Since I had always worked with technical materials, characterizing the polymeric soft foam cushion material properties was the most obvious task to a materials scientist. How the particular material and the cushion might interact with human body tissue became increasingly preoccupying. After contacting the manufacturer for medical bedding systems (generally referred to as aid devices or therapeutic appliances), I learned that the term decubitus refers to ulcerated tissue (or pressure sore) which recumbent patients or wheel-chair patients with strongly limited mobility are likely to develop.