Medical stockings can be used for treatment in a number of medical conditions. Medical stockings are typically heavier in weight and compression than the sheer or preventative products. Firm or Surgical weight (30-40 mm Hg) is standard opaque professional-medical surgical weight support hose is indicated for chronic foot/ankle swelling and venous conditions. Anti-embolism stockings (18 mm Hg) are often used post-surgically to help prevent thromboembolism formation during recovery.