Granite Gear Marais Backpack Polyester 19.75 x 12.5 x 9 inches weighing 2.1 pounds Barrier zipper and tricot-lined pocket holds your valuables Dual stretch hydration pockets with a hydration-ready port Multi-pocket organizer and top-loading main compartment Gear-Tek tricot-lined padded computer sleeve fits up to a 15.5-inch laptop