... place 2.Certification MSDS, CE, SGS 3.Guaranteed Durability hot/cold packIndications: Cold compress:headache, fever, toothache, sunstroke, scald, muscle scuffing, ... effective.4. It can adapt unlimited times of alternately cold or hot use after pre-cooling or pre-heating treatments ... :Do not use cold for more than 30 minute periods. Cold should not be used by people with circulatory problems unless ...