50 L Extra Large Capacity: 18 inch laptop backpack can be converted into carryon travel backpack suitable for 5 days traveling. Padded laptop compartment can fit 18 inch laptops computers. This travel laptop backpack with roomy space for all essentials such as travel clothes, business tech accessories, college school books. Ensuring the zipper is fully down with the puller at the bottom. This keeps your belongings safe from unexpected openings when you're walking TSA Approved & Multipurpose: The extra large backpack measures 21.5 x 15 x 9.5 inch. It can be opened 180 degrees easily and lay-flat which is convenient for pass through airline security quickly without taking out 18 inch laptop or notebook. Suitable for hiking, air traveling, vacation, international trip Anti Theft & Organization: Multiple pockets of this extra large laptop backpack offers plenty of room. Luggage strap allows a large mens computer backpack to be quickly attached to travel suitcase by sliding it over the upright handle, making it easier to carry. An theft proof pocket on the back of the backpack for men 50l could protect valuable items Water Resistant & Multifunctional: Extra large backpack 18.4 inch is made of water resistant fabric. Multifunctional front compartment can help to organize keys, business work items and keep them safe. Serve you well as a professional travel laptop backpack or outdoor daypack USB Charging Port: Laptop backpack for men 18 inch with external USB charger port and built-in charging cable which offers a convenient charging by connecting your electronic device anywhere and anytime. Great choice for thanks giving, christmas new year birthday gifts. Birthday gifts for adult men women TSA Approved Backpack: At airline checkpoint, the travel carryon tsa approved can unfold to 90-180 degrees, ensures a convenient and quick TSA scan. The laptop compartment helps you pass through airport security quickly and save your time. Large Capacity and Roomy Compartments. Separate Laptop Compartment: Fits under 17.3 inch laptops or computers. Main Compartment: Suitable for business travel clothes, work files, electronics accessories, college books. Front Compartment: For phone, earphones, wallet, passport, keys, notebooks, pens. Side Pockets: fit water bottles, umbrella. Specifications: extra large backpack for mens dimensions: 21.5" x 15" x 9.5" (54.6 x 38 x 24 cm), Weight: 2.2 LBS (1 kg), Capacity: 50 Liters, Fabric: water resistant 600D polyester. Laptop backpack exra large capacity occasions: hiking, air traveling, vacation, international trip. 18 inch back pack carry on size: Fit overhead bin. Luggage Strap: The large multi-pocket 50l laptop backpack for men for travel features a luggage sleeve on its back. Its over upright handle and fits on the suitcase neatly for easy mobility. Padded Shoulder Straps: Adjustable straps and breathable back pannel of the 50l backpack for men, less burden on travelers' shoulder and back when on the go. The extra large backpack is great for vacation travel and outdoor activities. Great gifts choice for thanks giving, christmas new year birthday gifts and functional present