The #1-rated KeyFit 30 is the easiest infant car seat to install simply, accurately, and securely. The new KeyFit 30 Zip features premium zipper accents for added style and convenience: zip-off canopy, zip-on visor, and zip-around boot! It also features a quick-remove seat pad that is machine-washable for easy cleanup. One-pull harness tightening and loosening in the car seat allow for quick fitting, and the thickly-padded infant insert gives extra support for a smaller baby. The shell is lined with energy-absorbing foam, and the vehicle base features the ReclineSure Spring-Loaded Leveling Foot, RideRight Bubble Level-Indicators on each side of the base, and the SuperCinch One-Pull LATCH Tightener to help achieve a tight and secure fit! The base also features easy vehicle belt routing and a built-in lock-off system for vehicles without LATCH. An enclosed underside helps protect vehicle seats from damage. Conforms to Federal Motor Vehicle Safety Standard 213. (Usage: from 4-30 lbs, newborn insert from 4-11 lbs)