A shoulder immobilizer has a pair of resilient cushions in an L-configuration. A resilient elbow cushion is generally perpendicular to a body cushion that fits under the shoulder of a user. The elbow cushion provides rearward cushioning of the elbow, particularly in sleep positions of a user. A pair of tangent belts support the cushions. A torso belt surrounds a portion of a users torso and is adhered to second or back sides of the two cushions. An elbow belt surrounds a portion of a users elbow and is adhered to a second or back side of the elbow cushion at one end and fastened to the torso belt at an opposite end.