Set Includes Car seat base includedFeatures At 9 lbs., the Cybex Aton G is one of the lightest infant car seats on the market The Aton G takes safety and comfort seriously with the use of linear side-impact protection, which reduces collision forces in a side impact crash, in-shell air ventilation for natural airflow and a Upf 50+ sun canopy. Additionally, the Safelock belt tensioner provides a quick and easy installation 11-position adjustable headrest with no-rethread harness: integrated harne.