... gel pack 2.hot or cold compress to painful area 3.Certification MSDS, CE, ISO13485 4.supply OEM cold hot pack Characteristics: ... It can adapt to unlimited times of alternately cold or hot use after pre-cooling or pre-heating treatments. ... Indications: Cold compress:headache, fever, toothache, sunstroke, scald, muscle scuffing, sprain, trauma haemostasis, beauty etc.Hot compress:arthritis, ...