Quality Material - Made of Oxford fabric with durable lining, it protects your belongings from splashing water and rain, durable to use Large Storage Space - One spacious main compartment fits 15.6' laptops, books, light clothes, or travel supplies Traveling with Ease - The back of the backpack has a strap that can hold the backpack on a pull rod of the luggage, which may reduce your burden during travel Convenient Charging - A USB port outside and the inside corresponding cable are also provided, which can be connected to a power bank inside the bag (Power bank not included), charging your device conveniently on the go Comfortable Carrying - The soft padded back design gives you maximum back support. Breathable and adjustable shoulder straps relieve the stress on the shoulder Multipurpose Design - With the concealed shoulder straps, it's not only a backpack but also can be used as a handbag, business briefcase, shoulder bag, or crossbody bag Easy Swiping Bus Card - Bus card slot design, specially designed for your bus cards, is easy to take and greatly reduces the possibility of a loss of your card. It can be also used to store your valuable cards Perfect Backpack - Ideal for business traveling, weekend getaways, shopping, going to school, professional office work, and other outdoor activities Specification: Size: 40x11x30cm Weight: 0.9kg Shoulder strap length: 45-60cm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.