Practical dual bag combination: main backpack+storage small bag, small items are stored separately, and can be easily picked up and taken away when changing bags, meeting the needs of layered storage.Large capacity and durable: The main bag can hold baby bottles, diapers, etc., while the small bag can hold snacks and documents, making it easy for children to travel with just one bag.Safe and Waterproof Material: Mother and baby grade fabric with no odor, waterproof and stain resistant, milk stains can be wiped clean immediately, making contact with baby products more reassuring.Comfortable and load reducing design: widened shoulder straps+breathable back pad, dispersing pressure without stretching the shoulders, adjustable length to fit different body shapes.Multi scenario adaptation: Taking into account daily baby walks and short trips, the appearance is simple and versatile, and the mother's back also looks exquisite.