Keeping patients warm during surgery and recovery has always been a challenge. Electric pads have a risk of overheating and circulating water blankets are easily damaged. Warm air blankets are a safe, economical solution. They are made of a silky polyester fabric with an inlay of nylon waterproof material to keep the airflow circulating upward towards just the patient. These blankets are machine washable (hang to dry). There is a 12cm diameter round opening with a nylon cord to secure the blanket to any of the major brands of warm air convection units.