This rolling backpack 17" is a great size for elementary to junior high students. Additional pockets help to keep things organized. My ten year old loves the extendable handle and it is not uncomfortable to use it as a backpack as well. Rolls easily, wheels are sturdy and smooth. Zippers are fine so far. Adequate room for books and his lunch. It is currently three months old and seems to be holding up well on all fronts. Surprizingly light for a rolling backpack. I would recommend this for elementary students and for junior high students that dont have a ton of thick books to tote around. It does expand somewhat and will handle quite a bit of stuff.