Expandable Semi-Waterproof Backpack MARK RYDEN The Mark Ryden bags are designed with quality and comfort in mind. Thanks to the Oxford material, they offer great water resistance and durability. They are also distinguished by their ergonomic design, smart design, and the large number of compartments they offer for organizing your items. Features: Durable semi-waterproof material Ergonomic design. Consists of three main compartments. The first compartment has a special Foam slot for safe holding of a laptop up to 17". The second layer has a spacious area for storing clothes during travel. The last and front compartment is ideal for organizing personal items. The shoulder straps are adjustable and designed with an ergonomic S-shape that ensures your comfort and relieves pressure from your shoulder. The specially designed back allows air circulation and proper body fit. Built-in USB port (charges your devices while on the move, keeping the power bank in the compartment) Special slot on the back for support on a suitcase Integrated keychain Material: Oxford Dimensions: 30 x 28 x 46cm Capacity: 38.7 L.