[Professional Material] Hot water bottle is made of food grade silicone, soft and durable, odorless and non-toxic. The BPA-free hot water bottle has a long heat retention time and can be used as an ice pack or cold water bottle. It is dustproof, reusable and washable. However, please do not use boiling water or strong corrosive liquid to clean it. [Microwave heating] The hot water bottle can be heated in the microwave oven with full cold water, you should heat the bottle within 3 minutes. Microwave heating power should be less than 1500W. [Multi-function] Hot water bottle for pain relief can be used hot and cold. Hot compresses can relieve knee pain, back pain, menstrual flow, cold hands and feet. Cold compresses can relieve pain, sports injuries, reduce fever and cool down. [Product Highlights] A variety of cute and high-definition design, healing cuties, cute, so that you have a good mood every day, convenient to use at home, office or carry out.