Features Port Designs Houston backpack with separate protective compartments for a 15.6-inch laptop and tablet. Large front pocket and two front zip pockets; side mesh pockets for bottles/accessories. Reinforced shoulder straps, back and bottom. Dimensions and material Laptop compartment: 400 × 300 × 35 mm External dimensions: 480 × 360 × 170 mm Internal dimensions: 400 × 300 × 90 mm Weight: 655 g Colour: Black / red Material: 600D / 1680D / 210D nylon