Ltpgtsteroplasts hotcold pack is uniquely designed for the convenient application of hot or cold therapy to painful areas of the bodyltpgtltpgtmade of strong durable material the pack contains a non toxic gel which remains soft even when frozen and a special barrier which helps retain both heat and cold ideal for sports injuries general bruising minor burns stiffness toothache etc can be heated in boiling water or microwaveltpgtltpgtltstronggtfeatureslt