Felix, Deine Ausdrucksweise war schon ok, aber die Maße in Deinem Link sind die des großen Cabin Trolleys, aber nicht die des IATA Cabin Trolleys.

Cabin baggage

Carry-on baggage must be stowed in the aircraft cabin which limits baggage to a size, weight and shape to fit under a passenger seat or in a storage compartment.
Cabin baggage should have maximum length of 22 in (56 cm), width of 18 in (45 cm) and depth of 10 in (25 cm). These dimensions include wheels, handles, side pockets, etc.
Carry-on items must remain with the passenger at all times and are the responsibility of the passenger.