Can it be used in Norwegian airplanes?
Hey, Martha,
It always depends on the airline, so you'd do best to check the exact airline's requirements, which, for Norwegian, it should be 55 x 40 x 23 cm. Folded, this one is about 60 cm x 50 cm x 29 cm, which is a bit more than that, so it can be it will have to be given to the stewards or checked in. Normally, if it's only 1-2 cm difference, they should let you take it on board, but this might seem a bit too big for that airline.
Your -very berry- Eli.