Compression stockings come in light, medium or strong material (class 1, 2 or 3) and are worn below the knee. Most people can tolerate class 2. If class 2 is too uncomfortable or difficult, class 1 is prescribed. If class 2 stockings do not work, it may be necessary to try class 3, although many people find these difficult to wear for any length of time. These can be prescribed by your doctor and obtained at the chemist. People often do not like wearing these stockings because they are uncomfortable, or difficult to put on, or don't look very nice. But they really help your circulation and can prevent serious problems such as ulcers.