1、Unique Design: Hot water bag is easy to fill, and the splashproof lip prevents water from splashing like those old rubber bags. Hot water bag adopts premium materials and exquisite craftsmanship, making the hot water bag has a more durable insulation effect. The U shaped design can help you easily shape the bag where you need it most. Perfect for keeping warm on cold nights2、Easy to Use: The wide mouth of the hot water bottle is easy to hold hot water, and the anti spray lip prevents water from spitting out. Only fill up to 2/3 capacity. Make sure the hot water temperature does not exceed 85 degrees Celsius before pouring. After adding water, check that the cap is tight to prevent leaks and burns. Hold the bottle neck, stand upright and slowly pour water to prevent the hot water from splashing on yourself, and screw the cork when filling 2/3 of the bottle.3、Deal for Travel: The knitted cover on this bottle helps you use it as a travel pillow for your long bus or plane trip. Pain attacks may occur in the most untimely place, so this is an ideal way. Perfect for keeping warm on cold nights. The knitted 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 high quality explosion proof rubber to ensure maximum safety and perfect heat transfer, keeping the water temperature for a long time. The knitted 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 Function: Hot water bag can be used as hot or cold compress for relieving muscle aches and pains, relieving menstrual cramps, sports injuries, etc. The knitted cover on this bottle helps you use it as a travel pillow for your long bus or plane trip. 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