Abstract: An apparatus and method for the therapeutic treatment of an elongated protruding body part. An inner liner and an outer liner, joined together at a proximate end form a cavity there between which is filled with a thermal reservoir material. The inner liner and outer liner are permanently sealed together and shaped to accommodate the body part which is to be thermally treated. The method includes chilling or heating the body part by chilling or heating the apparatus prior to placement over the body part. Preferred embodiments include a sterile inner pocket protected by a removable seal element and self-adhesive straps to secure the device more firmly in place.