Our approach: this guide presents comparison criteria. It does not claim to be based on personal testing of a specific product.
Check the rules for your exact trip
Permitted size and weight vary by airline, fare and sometimes route. A suitcase marketed as carry-on is not universally accepted. Check the conditions for your booking and measure the case including wheels, handles and exterior pockets.
Hard shell or fabric
A hard shell keeps its shape and resists some spills, while fabric luggage can offer exterior pockets and more flexibility. Neither is best in every situation. Consider what you carry and how you travel between terminals, stations and accommodation.
Wheels and handle
Four spinner wheels move easily on smooth floors; two larger wheels may cope better with some obstacles. Check wheel play and the rigidity of the telescopic handle. A handle that feels acceptable for a few metres can become important during a long connection.
Empty weight
Every kilogram of suitcase reduces the allowance left for your belongings when a limit applies. Compare empty weights without automatically sacrificing structure. A very light case still needs enough stability for the intended use.
Interior organisation
Straps, dividers and pockets help keep contents in place. Packing cubes may provide more flexibility than highly segmented interiors. Make a list and weigh the packed case before leaving rather than judging capacity by appearance alone.