The Safety 1st Ellaris Convertible Car Seat is made to be with you for years. With 3 ways to use, this car seat provides flexibility and comfort for your growing baby with Rear-Facing Infant (5-18 lbs.), Rear-Facing Toddler (18-40 lbs.), and Forward-Facing (30-65 lbs.) positions. The slim design fits 3 across the back seat of most vehicles so its perfect for growing families. The hook-style LATCH makes installation easy. An adjustable 5-position headrest and harness ensures the car seat keeps up with your little one. Airplane ready, its compact design makes for a better travel experience from the airport through the flight. The Ellaris Convertible Car Seat was engineered and tested to meet or exceed federal safety standards. It also meets the federal Side Impact standard.