[Quality material]: The main material of this hot water hot water bottle is food quality silicone, rotary bottle cap to avoid hot water leaks. Resistant to S and burns thanks to high temperature pressure shaping technology. Can be heated in the microwave. Note: please fill it with cold water and heat for no more than three minutes [Laptop size]: 10.3 cm x 16 cm, capacity: 320 ml, size adapted to all adults and schoolchildren. Pour gently into hot water, make sure that the water temperature is not too hot (less than 80 C), pour two thirds of the hot water bottle is better, keep out of reach of children and of your own age during watering. [Housing of hot water bag]: comfortable, magnificent, removable, washable. Knitted heating for better insulation that burns the hand with hot water. Go to the microwave. Do not pour into freshly cooked water. Keep the children far if you pour hot water. [Multifunction]: hot and cold. Hyperthermia: for cold feet, non -inflammatory artiary pain, cramps, abdominal pain and menstrual pain. Ice compress: Sports sprain, swelling, physical cooling, relief of teeth, fresh in summer. [Hot gift during a cold night]: the hand heater is an ideal gift for Christmas, a birthday, New year for children, girls, boys, men and women, parents, friends and your loved ones during long winter cold nights. It can be used to stay warm or treat back diseases and the rest of the body.