Over 20 lbs.-40 lbs. Children to one year and at least 20 lbs. Harness Straps at or below shoulder level Harness straps should be at or above shoulders.
Most seats require top slot for forward-facing.
Belt positioning booster seats must be used with both lap and shoulder belts. Warning Do not place infants in the front passenger seat of cars with air bags. All children age 12 and under should ride in the back seat. Make sure the lap belt fits low and tight to avoid abdominal injuries.