ClassMate® Medium Backpack’s kid-friendly features go beyond carrying capacity. For one thing, it’s made from durable, 600-denier polyester with a water-repellent finish. The no-tip base is 1200-denier pack cloth and the padded shoulder straps are securely stitched, so this bookbag can take all the dropping, dragging and tugging their school day has in store. In fact, we recommend making sure this is the pack they really want — it’s going to be with them a long time!