• Made of quality PVC material, with a spiral-type lid to prevent water leakage
• Large water-filling mouth, more convenient to fill or pour out water
• It safely withstands near boiling water and it's able to retain heat longer
• Great for pain relief, it can be used as a hot compress to relieve muscle soreness, menstrual cramps, sports injuries
• It is a great gift for friends, loved ones, and relatives
• Poured into hot water within 1-2 hours, suitable for outdoor use; 2-3 hours at room temperature to keep warm; 6-8 hours later can also warm the bed and quilt

Note:

• Add the temperature of the boiling water should not exceed 80 degrees, otherwise, the hot water is easy puff out when filling the water, causing a safety hazard.
• Water injection should not exceed 2/3 of the capacity of the hot water bag, while eliminating excess air.
• Keep warm for a long time with the ambient temperature, water temperature and placement (inside or outside the nest), in different conditions there will be differences.