The NASA Expeditions Elementary School Backpack with 3 Compartments is suitable for students who need a practical and durable school bag with an ergonomic design for safe, comfortable and easy transport of all necessary school supplies to school. - Dimensions: 32x18x43 cm. - Construction material: Polyester 600D - Capacity: 25L - Weight: 850g. - Ergonomic back with reinforced and reflective straps on the back of the school backpack that ensure the best posture and restful movements everywhere! - Features 2 central pockets, 1 front pocket and 1 inner organizer pocket for books, notebooks, case and all necessary school stationery - Side bag pouch with durable mesh - Handle for comfortable holding - Durable zippers with key holder