Great Insulation：Baby bottle bag has a great insulated lining that will maintain the temperature constant, keep the milk cooler for up to 8 hours. Baby cooler bag can keep the breastmilk both cold or warm according to your needs More Practical: Breastmilk cooler bag have detachable buckle top handle that you can put it in the stroller easily. Except for storing breastmilk, multifunctional cooler bag can as a lunch bag to store refrigerate fruits, lunch or other foods High Quality：BABEYER Baby bottle bag is made of high Polyester dirt-proof fabric, and durable smooth mental zipper. The lining of the cooler bottle bag are waterproof and wipeable. The side pocket can put some useful items, like phones, keys and so on