Air mattresses for medical purposes, namely, air mattresses that are regulated by the U.S. Food and Drug Administration as medical devices, said air mattresses being configured to treat and prevent pressure sores in the nature of decubitus ulcers and bedsores by reducing pressure on the parts of the body where pressure sores are prone to occur and by directing airflow toward a patient to prevent perspiration and moisture buildup at the body contact areas with the mattress, the air mattresses intended for licensed durable medical equipment dealers, acute care hospitals, long-term acute care hospitals, nursing homes and clinical care facilities