1、U Shaped: The wide mouth of hot water bag is easy to fill with water and the splashproof lip prevents water from splashing. The hot water bag's premium materials and superb craftsmanship give it more durable insulation.The U shaped design helps you easily shape the bag where you need it most. Perfect for keeping warm on cold nights. 2、2/3 Capacity Maximum: Fill only to 2/3 capacity maximum. Please make sure the temperature of the hot water should not exceed 85℃ before pouring. After adding water, check whether the lid is tightened to prevent leakage and scalding. Hold the bottle neck, stand upright and fill it slowly to prevent hot water from splashing on yourself, screw on the stopper when filling to 2/3. 3、Ideal For Travel: The soft cover on this bottle helps you use it as a travel pillow for your long bus or plane trip. Perfect for keeping warm on cold nights. The soft cover prevents the hot rubber from coming into direct contact with your skin, thus bringing a soothing experience. 4、Keep Water Temperature: Hot water bottle is made of explosion proof rubber to ensure maximum safety and perfect heat transfer, keeping the water temperature for a long time. The soft cover prevents the hot rubber from coming into direct contact with your skin, thus bringing a soothing experience. It can hold 1L of water, but it is recommended that you only fill up 2/3, which will help prevent water spills and allocate space for water when in use. 5、Multi Functional: Hot water bag can be used as hot or cold compress for relieving muscle aches and pains, relieving menstrual cramps, sports injuries, etc. Pain attacks may occur in the most untimely place, so this is an ideal way. A kind and comfortable gift for friends on Thanksgiving Day, Christmas day and new year's day Item Type: Hot Water Bottle Material: Rubber, polyester Weight: Approx. 520g/18.34oz Water Volume: 1L 1 x Soft Cover 1 x Hot Water Bottle