INTERCHANGEABLE CELL-MATTRESS Recommended for the prevention and treatment of pressure sore stage I and II in medium-term and domiciliary therapies. The 20 9.5 cm-high Nylon+PVC cells provide superior comfort. Cells are fixed by means of pressure stud and can easily be replaced in case of breakage. Manual and box in 10 languages: GB, FR, IT, ES, DE, PT, PL, HU, GR, Arabic.