Product Description Function Heat packs have many health benefits when used correctly at the right time and for the right ailments. This product can help you relieve neck and shoulder pain, relieve menstrual pain, maintain body temperature, relieve joint pain, promote blood circulation, improve sleep... Sometimes hot compress is even better than taking medicine? Effectively relieve menstrual pain Due to the effect of dilating blood vessels and promoting local blood circulation, every time dysmenorrhea occurs, apply a hot water bag to the abdomen for about 20-30 minutes, and there will be obvious improvement. Helps relieve pain Warming effect: The heat pack is also very suitable for keeping warm in cold seasons, effectively retaining heat and helping patients recover quickly. Antipyretic effect: Putting a small heat pack on the forehead, groin and armpits is one of the most effective home remedies for a fever. Note: There are many health benefits of using heat packs, but not if abused. manual Step 1: Pour hot water into the jar The temperature of hot water (60-90 degrees Celsius), do not use boiling water of 100 degrees Celsius (it is easy to cause burns and affect the expansion of plastic bottles). Using an ice pack is similar. The thermal insulation capacity of the hot and cold bags is -20C-90C. Step 2: Gently squeeze out the air, then close the lid Do not press anything on the hot water tank during storage. If you use it frequently, just dump out the old water, put it in a cool place to dry, and continue to use it next time. Material: Plastic and soft plush. Size: 16*12cm color as shown Included: 2 XHot water bag notes 1. Please allow a slight deviation in measurement. 2. Due to the difference of light and screen, the color of the product may be slightly different from the picture, thank you for your understanding.