hot cool pack 1.adapt unlimited times of alternately cold or hot use ... minus 20centidegrees enviroment.So it is locally named "Non-frozen Pack".2.It can be sent arbitrarily according to the appied ... , rheumatism, stomach trouble, cervical vertebra trouble, sciatica, and strain of lumbar muscles etc. Usages:Cold compressPut it in the icebox or ... ,plesase feel free to contact with me Lovely hot cool pack