Features 1. Large Capacity & Easy to Storage: The carry on travel backpack with many compartments, organization and expansion. The main pocket can hold your travel goods, fit 5-8 pcs clothes. Front compartment can also hold magazines, and books and power bank which can charge your phone. The laptop pocket holds laptops up to 15.6 inches backpack back with padded batter can protect your laptop. 2. Expandable Design: You can expand the zipper and buckles (expandable 12 cm) according to your requirement. Two handles set on the top and side for easy switching between backpack and suitcase. So it can be carried vertically or horizontally. The luggage belt on the back allows being slide over the luggage tube, backpack very easy to carry, it is great for 3-5 days daily travel. 3. Water Resistant Design: The business backpack is well made of waterproof and durable nylon fabric. There is a hidden anti theft pocket on the back to protect your valuable items from thieves. Internal waterproof PVC material to protect your goods from water. 4. Ergonomic airflow back design with thick but soft multi-panel ventilated padding for added support and comfort, decreasing the pressure of shoulder and neck. Shoulder straps with adjustable anti-slip chest belt and quick release. 5. A great companion for commuting, business trip, hiking, travel, camping and other outdoor activities. Specification Material: Oxford cloth Color: Black Size: Small: 47 x 31 x 25 cm(35L), Large: 52 x 34 x 27 cm(45L) Weight: 1550 g, 1610 g Package Include: 1x Backpack