Essential Winter Warmth Tool?The portable hot water bottle is suitable for seniors, women and men, you can use it at home, in the office or outdoors, and also makes a great warm gift for children, adults and parents in the cold winter. The correct use of hot water bottles?The maximum capacity of our hot water bottle with sleeve is 2000ml, it is recommended that the filling volume should not exceed two-thirds of the capacity and the water temperature should not exceed 80°C to avoid burns. The wide nozzle of the bottle comes with an anti-spout cap, which is safe and allows water to flow in and out easily, preventing water from flowing back out. Multifunctional Hot Water Bottles?PVC hot water bottles can be used alone as a remedy for aches, pains, and sports injuries, such as back pain, neck and shoulder pain, muscle aches, menstrual cramps and tension. In addition to traditional hot therapy, it can also be used as a cold compress to reduce swelling in children with fever. Durable, Safe to Use and Environmentally Friendly?The bottle complies with BS1970:2012, the British safety standard used worldwide for hot compresses for pain, which means it is leak-proof and durable. The bottle and cap are vegan-friendly and safe for babies and children. CAUTION: an adult should always supervise and never fill with boiling water. High Quality Hot Water Bottles?The hot water bag is made of new anti-aging PVC material, its life and and insulation time is longer than the traditional ordinary rubber hot water bag, and greatly improves the carrying capacity, which can bear the weight of an adult, will not burst, will not leak, and can be used with confidence. Can be used as ice bag.