Description of Gravis Metro Pack Durable nylon with PU2 backing and premium pinstripe polyester with water-resistant clear coating. Features: 210D nylon heat=embossed lining Main compartment with interior organizing pockets Front compartments with internal organizing pockets Separate computer pocket with neoprene cradle which hold up to 17" laptop Laminated ergonomic shoulder harness with wicking mesh Volume: 31 liters Exterior Dimensions: 52 X 30 X 20cm