The soft cooler can be used as a mobile refrigerator for the preservation of iced beverages, fruits, breast milk/tea/seafood and other foods; it is also used for refrigerated transportation of medicines, vaccines and other products. It can also be used for heat preservation food, lunch, restaurant delivery and so on. Portable, lightweight, stylish design, food can be kept warm and fresh for a long time, easy to use, suitable for outdoor picnics and daily life.