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.
In these conditions, there is too much fluid in the body. Other conditions that can cause swelling to one or both legs include: 1  Blood clot. 2  Leg infection. 3  Venous insufficiency (when the veins in your legs are unable to adequately pump blood back to the heart). 4  Varicose veins. 5  Burns (including sunburn). 6  Insect bite or sting. 7  Starvation or malnutrition. 8  Surgery to your leg or foot.