Thanks Winterchild. When I looked again I only found 20cm as the narrowest dimension of the case, so perhaps I imagined the 10cm. Also bear in mind that the non-rigid sides would probably allow some bulging. All things considered I don't think there would be any difficulty fitting a young child in such a space, let alone a skeleton. Rigor mortis would not apply as it lasts at most a few days.
I notice the case has external compartments which may explain how all the clothes fitted in as well.
I notice the case has external compartments which may explain how all the clothes fitted in as well.