is there are high-back booster that can fold up and be carried on plane as hand luggage?

[fairylights]

the subject says it all really! cheers

I have a Graco high-back that you can take the back off so it is just a booster.

www.jojomamanbebe.co.uk/pp+Baby-Car-Travel-Buggy-accessories+prod9

Just saw this in catalogue last night. Is it what you are looking for?

We just stuff ours in a bin bag when we get to the airport and bundle them in parcel tape so they can be checked in. Some airlines don't count them as baggage allowance.