... EN71,FDA 2.Non-toxic,non-caustic,reusable Bottle Warmer(Bottle Cooler),Milk Bottle Warmer,Baby Bottle Warmer1.CE,SGS,MSDS,EN71,FDA2 ... Especially effective on muscle aching, back aching, cramps arthritis pain and tenontodynia 5) To recharge: place the hot pack in boiling ... dissolved 6) To activate: place the metal inside between forefinger and thumb, press against is to start crystallization, when the ...