Hi, my kids have outgrown this great The First Years on the Go Booster seat. It is very practical as you can take it anywhere (especially to restaurants where they might not have a baby chair). Pull out the valve and it self inflates into a sturdy and comfortable full size booster seat; the adjustable safety belt with T restraint helps hold your child securely. Mealtime over, just press out the air and fold down the back. With a self carry handle, it’s compact, lightweight and ready to go. Take it anywhere. From 9 months to 50 pounds.