Very disappointed, I bought two for my children. The blue tips to open / close the zipper were removed after two weeks, some have been recovered, some do not, impossible remttre by tightening a bit, everything breaks. Two screws of the handle of a trolley of them were poorly made so quickly lost, acutellement the handle is broken. The straps hang down. They binders since September, are now wrecks on wheels that I will be forced to throw soon. Really strong for children's school bags, money wasted. They are even more disappointed than me :(