Nightingale Medical Supplies carries a wide range of compression socks, stockings, and sleeves from trusted brands including BSN Medical, CEP, Jobst, and Sigvaris. The effects of compression can often be felt immediately, such as reduced pain, swelling, heavy-leg sensation, and muscle stiffness. Compression Socks/Stockings of 20 mmHg, 30 mmHg and 40 mmHg are known as medical grade compression and must be prescribed by a physician. They are used for the treatment of various medical conditions, and should be used under the supervision of a doctor. The prescription for them needs to be renewed on an annual basis.