Cabin approved
Having a cabin approved stroller makes your holiday feel more stressfree.
According to the IATA (international Air Transport Association) baggage rules pushchairs are concidered "Cabin approved" if their max dimentions fit within 56cm x 45cm x 25cm
This ensures that they will fit into the overhead lockers as carry-on or hand luggage. However this is still worth checking with your airline, different airlines may have different sizes they use.