HiFineCare brand developers takes in many suggestions and opinions about the breast therapy on the market now. Then design and produce the gel breast therapy with best quality gel bead and PVC plastic. Just wiped off them with damp cloth if needed. Also, package include 2 washable flannel cover.INSTRUCTIONS FOR USEHot TherapyStep1:Put the gel bead pack in hot water or microwaveHot Water 3-5minMicrowave :700 Watts--16s1000 Watts--13s1250 Watts--11sAdditional Heating ln 5s lncrements OnlyStep2: clean and dry out the gel bead packStep3: Always test prior to application and guarantee superior temperature uniformityStep4: Put on cover and prevent scaldCold Therapy:Step1:Put the gel bead pack in fridge freezer or freezer indoorsFridge Freezer: 30-60 MinutesFreezer Indoors: 15-30 MinutesStep2: clean and dry out the gel bead packStep3: Always test prior to application and guarantee superior temperature uniformityStep4: Put on cloth and prevent frostbiteBREAST PUMP AIDHeat Gel Pads and warp around the outside of your breastpump flanges while pumping.Clean and wash off with mild soap.CAUTIONFor external use onlyDo not use on infants or allow infants to chew on packs.Do not use for purposes other than intendedOverheating or prolonged application may cause irritationDo not apply to sensitive skin or open woundsDo not puncture pack and/or ingest contentsDo not fall asleep using padsHeating beyond suggested time may damage or destroy HiFineCare Gel Pads.