Infants:
Birth to 1 year and 20 lbs. or less: Use Rear Facing infant seat. Less than 1 year, and 20 to 35 lbs.: Use Rear Facing convertible seat recommended for heavier infants.
Toddlers:
1 to 4 years, and 20 to 40 lbs.: Use Forward Facing convertible seats, or high back booster with harness.
Younger Children:
4 to 8 years and at least 40 lbs., and less than 4 ft. 9 in. tall: Use Forward Facing belt positioning booster seat.
Older Children:
Over 8 years old, or at least 4 ft. 9 in. tall:
Lap Belt- snug and low over the upper thighs, not over the abdomen.
Shoulder Belt- snug across the chest.