Even the old 'up to 18kgs' seats were tested with 22kgs 6yo test dummies. Report is that the I built harness for the New Maxi has been in house tested to 32kgs (seems to be In Preparation for next standard change which will allow for higher harnessing).
That is why the new standard seats are height not weight based as 97% of children under 4yrs are under 22kgs.
You've read the books and watched all the movies, now Harry Potter fans can visit the magical places from the wizarding world in person. Here's 10 of the best Harry Potter destinations every fan should see.