1. Convenient charging port design. The side of the backpack is provided with a convenient charging port to continuously battery the mobile phone when going out. 2. Choose Oxford fabric, and choose Oxford fabric for backpacks. The material is thickened and has the characteristics of softness, lightness, wear resistance and durability that other fabrics can't match. 3. Convenient back strap, the back of the backpack can be attached to the luggage case, and you can push it when you are tired.More relaxed, convenient and practical. 4. Large-capacity travel assistance. The large-capacity main bag is designed to cooperate with multiple external bags, which can support the accommodation of items needed for 3-5 days of travel and give you intimate companionship. 5. Comfortable hand-held, double-sided hand-held with buckles is fashionable, durable and more comfortable; Smooth zipper, hardware split zipper design, smooth, wear-resistant and durable; Telescopic shoulder strap, intimate design and convenient adjustment, suitable for people of different heights.