An ancient aromatherapy technique, especially in traditional Thai medicine, has been used for 4000 years in Thailand. The content of the small ball is made of lemongrass, play, turmeric, kaffir lime, formed into muslin compress. Its steamed to get all aroma out and used to treat a variety of conditions from headaches to muscle tension, inflammation. Deeply relaxation, helps to relieves stress and fatigue. After massage the therapist gently applies warm- herbal balls against the body in rolling motion, working thru all the knots.