I have only used one piece so far, but it looks pretty sturdy. I don't think it matters what kind of luggage you have when you check in with airlines. They beat them up.
This package set I have 2 big pieces and 2 broke. But all the small stuff still comes in handy. The others had problems with the rollers and top handles got stuck and broke inside the suitcases which were being pulled inside the flight.
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