Specification: MaterialNylonLining MaterialPolyesterColorBlack, navy, graySizeM: 15inch (Length:40cm/15.75" Width:13cm/5.12" Height:30cm/11.81")L: 17inch (Length:45cm/17.72" Width:16cm/6.30" Height:32cm/12.60")Features: Open Method: Zipper open. This bag can convert to backpack, shoulder bag and briefcase,just you want it to be. So convenient for carrying. Backpack style:Comfortable back strap system, easy and convenient to load on your back. Shoulder bag style: One back pocket for hiding the back straps, A removable shoulder strap been include, when you use it as a shoulder bag. Two main compartments designed for keeping laptop or tablet etc. compartment with pockets inside for keeping items like power cord, mouse, keys, passport , phones etc. durable luggage belt is convenient for fixing the bag on the trolley of a luggage case. Perfect for business traveling, weekend getaways, school and other outdoor activities in daily life.Package Included: 1 x Laptop BagNote: -Due to different producing batches, product details might be a little different.