1PVC material is environmental, non-toxic and healthy to use 2Easy to use, you put the bag into the cover and pour into 2/3 hot water in 80, then screw tight the lid 3Candy color makes it very warm and attractive 42000ml large capacity, you can hold it on your leg 5Consistent temperature maintain, can last for 2-5 hours in the room and 4-6 hours in the bed
