I purchased this for my little niece and she loves it! This is a heavy duty backpack, with complete structure. The fabric is thick, the stitching looks good and tight. The small pocket on the front doesn't have any gussets or anything, so it lies flat, which means you can't stuff a lot in there, but it works well enough. The stitching is strong, the material is very sturdy, and the backpack will sit up on its own if placed on its bottom. The zippers are smooth, which is a great help to younger hands. There is no binding or grabbing at any point in the zipper's travel. Good back pack in my opinion for elementary maybe middle school. School just started so as far as durability we will see.
https://www.amazon.com/Jeteven-Backpack-School-Shoulder-Schoolbag/dp/B01J7F5P5S