currently in aus the limit is 12kgs or 12months rear facing
my children have Safe N Sound Meridian AHR for my toddler and Safe N Sound Maxirider AHR for my almost 3
the maxirider is still the safest booster on the market and is 8kgs-7years my son started using his booster at 2years old my daughter will be 19months as weve got another bub on the way so will buy her a maxi rider AHR