Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. 28" x 18" * Single compartment cushion * 4" air cells provide prevention and healing relief from ischemic ulcers (pressure sores) * Maximizes pressure distribution, blood flow and nutrient exchange, as well as shock and impact * Conforms to the body?s shape and adjusts to body changes over time * Includes cover