An intense and/or prolonged pressure on the same body area can occlude the blood vessels, causing the concentration of the toxic substances and the cell death. The Pressure Ulcers (PUs) are a frequent complication in bedridden patients having limited activity and mobility, often affected by loss of sensory perception and metabolic/circulatory changes (elderly people, surgical patients, intensive care admissions, spinal cord injury patients). In order to prevent and to stop the PU progression the current strategies employ passive (or static) and active (or dynamic) support surfaces. The passive solutions (soft materials and foams, gels, water mattress, air filled surfaces) reduce the pressure magnitude by maximizing the contact surface area.