This is a new multi-functional bag specially designed for families with babies. It features a barrel-shaped design, making it stand out among numerous bags. First of all, it serves as an excellent bottle bag, capable of accommodating baby bottles well and providing a safe and stable space for them. Moreover, it has the function of constant temperature preservation, ensuring that babies can always drink milk at a suitable temperature. Not only that, it can also be used as a breast pump bag, making it convenient for moms to store breast pumps and related items. It is no longer a hassle to carry a breast pump when going out. The usage of this bag is very flexible. You can carry it by hand to meet your needs when traveling on foot. It can also be hung on the stroller. When you are taking a stroll with the stroller, the bag can be easily hung beside the stroller, making it extremely convenient to access items. In addition, it can be used as a small lunch bag. You can put your baby's snacks, small tableware and other items in it, providing a dedicated storage place for your baby's dining equipment. Whether you are taking your baby out for a daily walk, a trip to the park or a short journey, this bag is your considerate helper, which can greatly enhance the convenience of traveling with your baby.