This car seat offers state-of-the-art safety protection and comfort your little one will love, so you get peace of mind when traveling with your precious cargo. Why parents will love it: With advanced safety features and easy installation, this rear-facing infant car seat monitors the well-being of your little one through the smart chest clip. It also features an 12-position, height-adjustable headrest that simultaneously changes the easy-in buckle pad harness length when you move it, making it simple to adjust after each of baby's growth spurts.Why kids will love it: The seat can be put into a full-recline position when it's not in the car, so your little one can keep napping when you arrive at your destination. In-shell air ventilation helps keep your little one cool and comfortable with its natural airflow.Child weight/height: 4-35 lb.; up to 1 year. Infant insert is included.Car seat weight/dimensions: 26.5"D x 17.6" W x 15.8"H.Safety features: Innovative Load Leg Base prevents the seat from rotating forward during a crash, offering extra support and protection for baby's head, neck and spine Linear side-impact protection and anti-rebound base can help reduce collusion forces up to 30% from a rear, side, or front crash. The easy-in buckle pad harness features Sensor Safe Technology integrated in the chest clip. The car seat is FAA complaint for aircraft use without the base. Crafted from flame-resistant fabric, this car seat passes federal safety standards without fire-retardant chemicals.Harness: No-rethread harness automatically adjusts when you adjust baby's headrest, and footrest extends automatically at the same time.Car installation: One-click rigid LATCH install offers quick, simple, and safe installation in five seconds.Stroller compatibility: Compatible with all Cybex strollers (sold separately, adapters required and not included). Sensor Safe alerts you when child unbuckles the chest clip while still in motion, if child is seated for a prolonged period o