This thermal pack comes with a plush protective cover. The heat preservation effect is very good, especially in winter, a hot water bottle with a lid can soothe and warm your body. Made of 100% natural rubber, the quality is safe and reliable, strong and durable, and has a long service life. Natural rubber has an odor and will be emitted without affecting its use. The hot water bottle can be used for hot or cold compresses. Hot compresses are mainly used for the abdomen and waist to relieve muscle soreness, menstrual cramps and mental stress. It can also be filled with cold water to help you relieve pain and sports injuries. The rubber hot water bottle has a very wide mouth, which is easy to fill with water, and the screw cap is not easy to leak. Note: Two-thirds of the maximum filling capacity, do not fill with 100% boiling water. This thermos is manufactured in compliance with B.S.1970:2012 to ensure maximum safety. Please rest assured to use. But please note: Thermos rubber is not suitable for microwave heating.