The Chicco KeyFit Plus Infant Carrier offers your baby superior comfort and safety. The large seat provides ample room for infants from birth to an average of 9 months. The Keyfit Plus can be used in conjunction with the Chicco Urban Stroller as a Travel System, making moving from the car to pram a breeze for parents. The free standing car seat base comes with push button base levelling adjustment which ensures the correct positioning of the seat in the base.