Does it fit in the overhead compartment of a plane?
This ALWAYS depends on the airline, really. The requirements for the overhead luggage differ from one airline to another, so always consult the approval with their guidelines. The folded dimensions of the Aero - 57 x 42 x 29 cm - should be fine with quite many of them, so in general, the answer is YES. Again, it is depending on the airline requirements that you should consult for sure before counting in that.