We have cabin suitcases that are the right size for Lufthansa carry on baggage, if you don't include the wheels.
Annoyingly the dimensions given on the website we bought them from say they include the wheels and handle, but they don't. We've already used them so can't return them.
Anyway, with the wheels they are a few cm over the max.
Are Lufthansa going to check them and then make us pay £££ to put them in the hold?!
DH thinks I need to chill out, he may be right.
(I have one child already anxious about flying so would really prefer not to add any extra stress to the situation!)