Thank you for viewing! This is a backpack with a carry-on bag function. Famous Trails Backpack 2-way specification: It has shoulder straps for carrying as a backpack, and casters (wheels) and a retractable handle for pulling, allowing you to use it according to the situation. Uses: A backpack with casters is convenient when you have a lot of luggage or when you want to reduce the burden of carrying heavy luggage on your back during long-distance travel. It is useful in a wide range of situations, such as travel, business trips, and outdoor scenes. It can also store laptops and tablets, making it convenient for telework. Has a pocket for storing plastic bottles. Convenient for domestic travel, commuting, going to university or vocational school, business trips, business backpacks, short trips, events, etc. Also suitable for emergency carry-out bags and disaster relief backpacks. The simple and stylish design is suitable for both men and women. Water-repellent finish for excellent waterproofing. Size: Width 36cm x Depth 20cm x Height 55cm Weight: Approximately kg - Colors: Olive green and black - Design: Backpack with carry-on bag function - Pockets: Zipper pocket on the front - Handle: Telescopic handle - Material: Durable nylon material