1. This is a multi-functional bag specially designed for families with babies. It features a barrel-shaped design, which is quite unique among various bags. 2. First, it serves as a good bottle bag and can accommodate baby bottles well, providing a safe and stable space for them. Additionally, it has a constant-temperature preservation function to ensure that babies can always drink milk at a suitable temperature. 3. Moreover, it can be used as a breast pump bag, making it convenient for mothers to store breast pumps and related items. Carrying a breast pump when going out is no longer a hassle. 4. The usage of this bag is very flexible. You can carry it by hand to meet the needs of walking. It can also be hung on the baby stroller. When you are taking a walk with the baby stroller, the bag can be easily hung beside it, making it very convenient to access items. 5. In addition, it can be used as a small lunch bag. You can put the baby's snacks, small tableware and other items in it, providing a special storage place for the baby's dining equipment. Whether you are taking the baby for a daily walk, going to the park or taking a short trip, this bag is a helpful companion and can greatly improve the convenience of traveling with a baby.