Features:1. Easy to use: The wide mouth is easy to fill with water and take out the water when not in use. You can put boiling water inside. Silicone can also withstand low temperature. So both hot water and cold water are fine2. Leak-proof and leak-proof: There is extra rubber in the wide month, which can prevent leakage and leakage. Don't worry about the water coming out when you use it.3. This hot water bottle has pain relief: our hot water bottle is a home remedy. It can be used to treat muscle pain, anti-stress, aches and pains release, stiff necks release, lower back pain and so on.4. Wide Application: This rubber water heating bag warmer relaxation bottle provides you with high-quality and comfortable hot or cold therapy in the comfort of your home. It can be used as a home remedy to relieve problems such as muscle tension, aches, cramps, and more.5. Compact: This rubber water heating bag warmer relaxation bottle comes with an ultra-secure screw-top lid. It's compact for easy storage and light enough to carry anywhere. Description: I'm not sure you can sleep well on a frosty night, our hot water bottle will help you keep your body warm and comfortable. A hot water bottle with a lid can keep warm for a longer time. Specifications:Material: RubberColor: Randomly DeliveredSize: 21x11cm, 27.5x14.5cm, 31x16.5cm, 34.5x18cm (Optional)Package Included:1 x Hot Water BagNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. The minitorings are not calibrated same, the color of the item displayed in the photos may be showing slightly different from the real object.