The material is durable, lightweight, and water-resistant polyester, so you can use it for a long time. It has a main compartment that holds a surprising amount, fitting A4 size items, and a large zippered pocket on the front. It also has a harness belt to secure the backpack to your body, making it functional. It's easy to neatly store items for field trips, extracurricular activities, etc., and prevents your lunchbox from tilting! It has been stored at home. ■Size: W27 H38 D13cm ■Material: Polyester ■Weight: Approximately 400g ■Pockets: (Outside) Zippered pocket x 1, Side pockets x 2, Open pocket x 1 (Inside) Hanging pocket (clear pocket) x 1