180 Open: You can open the backpack to a 180 flat position, which allows you to better organize or check your belongings, and it is also very quick and convenient to go through security checks, saving time. Expansion design: Unique expansion capacity design, from 26L capacity to 32L with one-touch zipper, perfectly balances the needs of daily work and short business trips, making your life and work more efficient. Detailed design: While ensuring quick and easy access to items in the backpack, a dedicated space is also designed for personal items, including a computer compartment, an electronic digital compartment, and a multi-functional stationery compartment. The scientific division of the compartments also prevents items from being missed. Three-dimensional business version design: The product adopts a water resistant nylon and leather design. The material is splash-proof and abrasion-resistant.