Designed for your growing child, the Alpha Omega 3-in-1 Car Seat by Safety 1st will take your little one all the way through three different stages. It starts as a rear-facing infant car seat, converts to a forward-facing car seat and then transitions to a belt-positioning booster car seat when your child is ready. The car seat also features the QuickFit Harness System, which adjusts the harness height and headrest together without rethreading.|5-point harness system with Center Front Adjust, QuickFit harness system adjustment, side impact protection, 3-position recline, UAS-equipped for easy installation. Rear-facing 5-40 pounds. Forward-facing 22-65 pounds. Belt-positioning booster 40-80 pounds. With removable infant inserts, padded harness covers, and machine washable pad, your little one will be sure to love this car seat as much as you do!