Hello Carole, The Donjoy Dura Soft Shoulder Wrap/Back Wrap can be used for both the shoulder and back. It is a 12x13 square ice pack that can be wrapped around and secured with 2 velcro straps. This is not to be used as a sling.
Edema is swelling of both legs from a buildup of extra fluid. Prolonged standing or sitting, especially in hot weather, can cause excess fluid to accumulate in the feet, ankles and lower legs. Tiny valves inside the veins of the legs can become weakened, causing a common problem called venous insufficiency.
Excess fluid can build up in various locations in your body, leading to a condition called edema. Edema is swelling that usually occurs in the feet, ankles and legs (where it's called peripheral edema), but it also can occur in the lungs (where it's called pulmonary edema) and in the abdomen (where it's called ascites).