have been tested once to Shopping Roller, in which I had transported about 15 kg form of glass bottles to the container. The wheels are large and good enough for the normal walkway flooring, but at cobbled it rumbles properly what was to be expected with the plastic rollers also. The handle might be like later in the rolling operation, it can be the instrument but better carry over cobblestones or stairs.
Tip for Developers: A hand carrying-strap to the bag would make sense, then you could use the case even better without scooters!
