Happy Bear Eco Warmer in the shape of a bear, perfect for the coming cold season. Reusable and convenient. 《How to Use》 With the convex part of the metal button inside the liquid facing up, press the center of the convex part to make it concave. The liquid will gradually crystallize and generate heat. ❇︎If it doesn't react the first time, try several times. 《How to Reuse》 ❶ After the heat is finished and it has completely cooled and solidified, put it in boiling water and boil it. ❇︎Be sure to wrap the body in cloth, etc., so that it does not touch the metal surface of the pot. It may melt. ❷ It will begin to return to liquid in 5-10 minutes. ❇︎Do not leave the fire and check the situation. ❸ Once it has returned to liquid, take it out, wash it with water, and cool it. ❇︎Be very careful of burns. ❹ Check that there is no abnormality in the body before reusing. 《Size》 Approximately 10cm x 8cm I have stored it unopened, but I opened it for photography. Please consider it if you agree with home storage, etc. Thank you very much.