The first and last car seat you will have to buy. The Alpha Omega is a convertible car seat that grows with your child, 5-35 lbs rear facing, 22-40 lbs forward facing, 40-80 lbs belt positioning modes. The 4-position headrest adjusts with harness: never needs rethreading so it adjusts for a growing child. It comes with a padded headrest for extra toddler and child support and the infant body insert helps keep baby more upright and comfortable. The 3 position recline allows for proper child adjustment and comfort. The removable full wrap tailored fabric pillow allows for ease of cleaning and the removable cup holder is for child's favorite drink.