Most experts suggest waiting until your baby hits the one-year mark, or at...
https://zoom-wiki.win/index.php/What_Age_Is_Too_Big_for_a_Rear_Child_Bike_Seat%3F
Most experts suggest waiting until your baby hits the one-year mark, or at least demonstrates strong neck control. Before you head out, confirm your little one sits up independently and handles the weight of a helmet comfortably