I bought this back pack for my kindergartener when he started school in August. I have had to replace the bag as the bottom is disintegrating and the main zipper keeps seperating. I found it only because my son had little black flecks all over his library books and lunch bag. I held the backpack up and could see right through the bottom of the bag. This is not a durable backpack. It a kindergartener can't utilize it I can't imagine it would hold up to an older child or adult. I was very disappointed in this bag.