Features Port Blackstone II backpack has a dedicated protective compartment for laptops up to 15.6 inches. Four outside zipped pockets; internal organiser and key ring; double document compartment. Ergonomic back padding, reinforced handles, backpack straps and waist strap. Dual-zip closure. Dimensions and material Material: 600D nylon Colour: Black Internal dimensions: 38 × 26 × 5 cm Warranty: Limited lifetime