zipper sliders can be locked with a padlock (not included) special YKK zippers the most durable in their class Upper and side handles for comfortable handling and carrying in the hand Waterproof material integrated tag of Okoban Global Luggage TrackerModel: Classic Tropical blocks Colour: Blue Fastening: zipper Storage: main pocket, laptop pocket, inner pocket Laptop pocket: 15.6" diagonal Specification: padded straps Material: Polyester Dimensions: 45x31x20 cm Volume: 36 l Washing and maintenance: wipe with a damp cloth