The specified total weight of about 25 kilo has been through the trailer without any problems, we used the trailer to 36 kilos. After that at some point the screw could not stand and the holder is always slipped off the frame. An inspection of the screw before driving is definitely recommended always.
We have been with the part the road every day in all weathers and the children were well protected thanks raincover also in autumn and are very happy to chauffeur them.