NWT Topo Designs Global Briefcase Backpack Black/Black 。Personal item compliant on most airlines 3-way carry for smooth travel (stowable backpack straps, removeable shoulder strap and grab handles) Padded external laptop compartment, fits most 16\" laptops Pass-through panel secures bag to rolling luggage handle U-shape entry to large main compartment Two large dimensional external pockets with interior mesh slip pockets and key clip Removable adjustable padded shoulder strap Stowable padded spacer mesh backpack straps Bottom compression straps that double as attachment straps PackFast™ Attachment Loops for attaching to larger bags Heavy-duty YKK zippers 400D recycled nylon, 210D recycled nylon pack cloth liner, 1680D recycled ballistic nylon base 16.5\"w x 11.5\"h x 4.5\"d 1220 cu. in. / 20 L