Features: Secures baby from 4 to 30 lbs. Energy-absorbing foam for improved side-impact protection. Removable newborn insert for smaller babies. Thickly cushioned seat pad and five-point harness for maximum comfort Spring-assisted level foot, bubble levels, and “Center-Pull” adjustment for easiest installation. Compatible with the Chicco Ct. 0.1, Cortina, Trevi and S3 strollers.The Chicco KeyFit 30 Infant Car Seat is the premier infant carrier for safety, comfort, and convenience. With its removable newborn insert, the KeyFit 30 Car Seat will accommodate your baby from four to thirty pounds. The KeyFit 30’s thickly cushioned seat includes a five-point safety harness and is lined with energy-absorbing foam for increased safety and comfort. The KeyFit 30 Base’s spring-assisted level foot, two precision bubble levels, and “Center-Pull” LATCH adjustment guarantee quick and correct installment from either side of your vehicle and give you confidence that your child is safely secured in your vehicle.