It is disposable and easy to provide relief of minor muscular and joint aches and pains associated with over exertion, strains, sprains and arthritis, period pain, etc. It will gradually get warm and last for at least 8 hours.
Open the outer pouch and shake gentle, leaving the internal pack to react with air. It needs around 30 minutes to reach its therapeutic temperature, use it on the affected area.
Kinds of shape, for all parts of body are available.