A layer of non-woven fabric is added to the surface of the water filled ice bag to prevent water mist from appearing on the surface of the ice bag, which can effectively absorb the water mist that appears on the surface of the ice bag to a certain extent. The method is to separate the water injection port of the ice bag, place it on the faucet, inject water, and decide how much to inject according to your own needs. After 10 minutes of water injection, the bag will be in the form of gel, and then the ice bag filled with water will be put into the refrigerator or freezer, which will be used for cold insulation according to the freezing time of the articles. After the refrigerator is frozen, it can be stored in a refrigerated area. Water filled ice bags are suitable for cold and fresh transportation of aquatic products, sea insects, seafood, meat, dairy products, beverages, vaccines, reagents, household products, flowers, solder paste, etc. Generally, it is used together with foam boxes