HIGH-QUALITY MATERIAL - The hot water bottle is made of high-quality PVC material with a tight seal for maximum safety and heat retention. The belt is made of flannel, which is skin-friendly and provides you with extra warmth. With a capacity of 1 liter, it is perfect for daily use. MULTIFUNCTIONAL - The hot water bottle can not only be used for pain relief and relaxation, but can also be filled with cold water for cold compress and cold therapy. It is versatile and can be used to relieve abdominal pain, muscle tension, and pain during a girl's menstruation. 3-IN-1 SET - The included hot water bottle cover allows for comfortable and safe use without direct contact with the hot water bottle to prevent burns. The belt can hold the hot water bottle and gives you more options to use it on other parts of the body. PERFECT GIFT - This hot water bottle with cover is a practical and thoughtful gift for your loved ones, friends, parents, and for all occasions.