Product description The multi color hot water bottle with cover, 2L Hot water can be used for cold and hot therapy. Keep you warm in cold Winter. The hot water bag can be used as hot therapy, benefit for : Alleviate back, shoulder, neck, joint and other parts of muscle soreness.The water bag is better for serving to calm menstrual cramps. At night, the hot water bottle with hot water can be warmed your feet. Fill with ice water, the hot water bottle can be used to reduce swelling for minor injuries. Notice: Please fill 2/3 hot water when you use the water bag. And excess the extra air. If you don’t excess the extra air, you maybe find the hot water bag is slowly expending, pls open the lid and remove the extra air. Avoid leakage and explosion. Directions 1. Be cautious not to microwave the hot water bottle as it is made of PVC material. 2. To use for hot therapy, fill 2/3 of the hot water bottle with hot water, ensuring to release any excess air to avoid expansion. 3. For cold therapy, fill the hot water bottle with ice water. 4. Use the wide mouth to easily fill the hot water bottle. 5. The helical cap prevents leakage. 6. The hot water bottle can keep warm for 6-8 hours. 7. The cover is washable and can be carried anywhere, making it a great gift.