The #1-rated Chicco Key Fit infant car seat is engineered with innovative features that make it the easiest infant car seat to install simply, accurately, and securely every time. The KeyFit's stay-in-car base has a recline Sure leveling foot and two ride Right bubble level-indicators to help achieve and verify proper angle in the vehicle seat. The base is also equipped with premium LATCH connectors and a super Cinch tightener for a secure fit with a fraction of the effort. For alternate installation with the vehicle seat belt, clear belt routing and integrated lock-offs make it easy to position, tighten and lock the belt into place. A smooth underside helps protect vehicle seats from damage. The car seat carrier includes removable head and body support to accommodate newborns as small as 4 pounds. A five-point harness with one-pull tightening helps keep baby secure, and the carrier shell is lined with EPS energy-absorbing foam for improved impact protection. An adjustable, removable canopy provides shade from the sun. The key Fit is designed for travel system use with compatible strollers from Chicco. The carrier secures easily to the base and strollers with a reassuring audible click. A two-position carry-handle and one-hand release make it just as easy to remove. For use from 4-22 lbs and up to 30".