Extended Rear-Facing Use with Maximized ComfortThe NextFit Max Zip Air Extended-Use Convertible Car Seat offers 25% more legroom than other Chicco NextFit car seats and a 50 lb. weight limit to comfortably maximize time in the rear-facing position. It offers upgraded features like a 3D AirMesh backrest for enhanced airflow and a zip-off, machine-washable seat pad for easy care.Offering a seamless transition, the NextFit Max Zip Air provides more calf support in forward-facing mode and a 65 lb. weight limit. A 9-position, Easy-Extend Headrest System raises with the harness to effortlessly accommodate growth throughout both modes and a removable newborn positioner, creates an infant car seat for newborns weighing 4-11 lbs.Easiest To Install CorrectlyThe NextFit Max Zip Air is designed with smart functionality that makes it the easiest to install correctly, every time. Dual RideRight bubble levels and a nine-position ReclineSure leveling system help verify and achieve proper angle in the vehicle seat. Premium connectors, a SuperCinch force-multiplying tightener and the LockSure belt-tightening system provide a secure install via LATCH or the vehicle seat belt.Premium ProtectionDuoGuard features a deep rigid shell and EPS energy-absorbing foam. that surround the head and torso for head and body support. The seat shell is also reinforced with a steel frame for superior impact protection.For everyday use and cleanup, this Chicco car seat features a padded, zip & wash seat pad and a space-saving, dishwasher-safe CupFolder .