Whilst it might not add any weight to the case, it may well add weight to the parcel. In our case my wife is 4ft 10" high and had a 2.5 hour journey so I felt that needed to be taken into consideration too.
Our parcel weighed 3 kilograms when it left the UK. Then my wife's documents had to be added, plus photocopies......she had to get 1 tricycle ride, 2 jeepney rides, 1 bus and 1 MRT to jump on and off of to get to VFS......phew!