My three youngest (12 months, 19 months, 24 months ) are all in high chairs and the three oldest (2.5,3,3) are in boosters. They are not strapped in just need to be higher to see the food. My 2.5 yr old's last day is tomorrow and when I bring in a new one (my two interviews are for 11 month olds) the 24 month old will be moved to the booster and the baby will go to the high chair. I also have two chairs that dont have boosters that my two school age kids use for breakfast.