The Ergobag Prime is a school bag for 1st to 4th grade students. Winner of Tænk's school bag test for the last 2 times. This ergonomic school bag features an adjustable back height with the 'Your-Size-System', allowing it to grow with the child from 100 cm to 150 cm or from 1st to 4th grade. It includes a solid base, wide detachable hip belt, and integrated storage space for lunch box and water bottle. Made from 100% PET bottle textiles.