Made with high-quality materials and exquisite craftsmanship, ensuring comfort, durability, and storage functionality. Carry-on Size Before expansion: 40x25x17 cm (15.75x9.84x6.69 inches) After expansion: 40x25x20 cm (15.75x9.84x7.87 inches) This 17-20L travel backpack Expandable Specifications The main compartment can open 180° and expand its capacity from 17L to 20L (40x25x20 cm). This allows you to easily and neatly organize your luggage while traveling. Abundant Pockets Side bottle pockets, two zipper pockets each on the front and main compartment, allowing you to organize everything neatly. This backpack also has a compartment that fits up to a 14-inch universal laptop, an anti-theft zipper pocket on the back, and a card pocket and sunglasses strap on the right shoulder strap. Three Carrying Methods This is not only a travel backpack with shoulder straps, but also a durable piece of luggage. You can use the luggage strap to secure the bag to the handle of a suitcase. Comfortable and Durable The air mesh on the back panel is breathable and provides a comfortable carrying experience. The adjustable chest strap relieves pressure on the shoulders and increases the stability of the pack. Made of polyester fabric, it is waterproof and durable, making it the perfect choice for business trips, commuting, and hiking. Carry-on Travel Backpack, compatible with 14/13.3/13 inch laptops, water-repellent, 3 carrying methods, for business, commuting, and outdoor activities. 2101 ※ Although 《Brand New》, it has been opened, so it is listed as 《Like New》. ※ Operation has not been confirmed.