... 55g,60g 4.materical:pvc,CH3COOH 1) Instant heat up to approximate 54 Celsius when activated 2) ... arthritis pain andtenontodynia5) To recharge: place the hot pack in boiling water with cloth below, note, preventthe ... , rub it until itbecomes soft, this hot pack gives soothing effect to rheumatic conditions of jointsas ... temperature in winter8) Store: when boil the pack in water for 4-5 minutes until it ...