Material: Recycled water-resistant nylon, polyester lining, durable SBS zipper.. Size: 45 x 30 x 15 cm//17.7 x 11.8 x 5.9 IN. This backpack weighs only 440g and is very comfortable to wear.. Multiple Occasions: Suitable for school, commuting, travel, hiking, and so on. When traveling, You can bind your backpack easily onto your suitcase with a luggage strap on the backpack.. Comfortable: Designed with an adjustable padded shoulder strap, and breathable mesh back panel, the chest strap of the backpack is also detachable and adjustable with buckles.. Keep Everything in Order: With large capacity, multiple compartments, and key clips, you can always make your sundries well organized in this backpack.