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 USE Hot Therapy Step1: Put the gel bead pack in hot water or microwave Hot Water 3-5min Microwave : 700 Watts--16s 1000 Watts--13s 1250 Watts--11s Additional Heating ln 5s lncrements Only Step2: clean and dry out the gel bead pack Step3: Always test prior to application and guarantee superior temperature uniformity Step4: Put on cover and prevent scald Cold Therapy: Step1: Put the gel bead pack in fridge freezer or freezer indoors Fridge Freezer: 30-60 Minutes Freezer Indoors: 15-30 Minutes Step2: clean and dry out the gel bead pack Step3: Always test prior to application and guarantee superior temperature uniformity Step4: Put on cloth and prevent frostbite BREAST PUMP AID Heat Gel Pads and warp around the outside of your breast pump flanges while pumping. Clean and wash off with mild soap. CAUTION For external use only Do not use on infants or allow infants to chew on packs. Do not use for purposes other than intended Overheating or prolonged application may cause irritation Do not apply to sensitive skin or open wounds Do not puncture pack and/or ingest contents Do not fall asleep using pads Heating beyond suggested time may damage or destroy HiFineCare Gel Pads.