The present invention includes a support system for surgical patients, a convertible support for surgical patients, and a method for providing a convertible support for surgical patients. The support system comprises an arm cradle adapted to hold an arm of a patient at an angle when the patient is in a supine position and a side bolster adapted to be positioned against a side of a patient opposite the arm cradle. The side bolster is adapted to stabilize the patient in the supine position. The arm cradle is adapted to hold an arm of a patient at an angle conducive to recovery from shoulder surgery when the patient is in a supine position. The arm cradle is also adapted to be worn as a sling when the patient is ambulatory. The arm cradle, side bolster, and an optional head support may be secured to a mat in a temporary manner.