Description: 【Roll Top Design】: This roll up backpack adopts a roll top design, which can adjust the height and capacity of the bag as needed, and can be extended to 25 cm, which is more convenient 【Waterproof Material】: This roll lid backpack is made of Oxford cloth, which is waterproof, scratch resistant, fade resistant 【Spacious Multi Pockets】: Large capacity design roll top backpack, including multiple pockets and an expandable multi functional front pocket, can accommodate all your daily necessities 【Adjustable】: The adjustable chest buckle of the large capacity travel backpack can adjust the height according to your height, and the breathable sponge back pad ensures a comfortable travel experience 【Compact Size】: This business casual backpack measures 30cmx16cmx45cm/11.81inchx6.30inchx17.72inch, with ample space while maintaining a compact appearance, suitable for business and leisure occasions Specification: Material: Oxford Cloth   Size Chart: 30cmx16cmx45cm/11.81inchx6.30inchx17.72inch Package Includes: 1 Roll up Backpack Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.