Topo Designs Commuter or Mountain Briefcase Messanger Laptop Backpack Personal item compliant on most airlines 3-way carry for smooth travel (stowable backpack straps, removeable shoulder strap and grab handles). Please note the removable shoulder strap does not come with the backpack, you will to provide a shoulder strap. Padded external laptop compartment, fits most 16" laptops Pass-through panel secures bag to rolling luggage handle U-shape entry to large main compartment Removable adjustable padded shoulder strap Heavy-duty YKK zippers 400D recycled nylon, 210D recycled nylon pack cloth liner, 1680D recycled ballistic nylon