BUILT TO GROW: The Safety 1st Grow and Go Convertible Car Seat is for extended use through 3 stages: Rear-facing 5-40 pounds, Forward-facing 22-65 pounds, and Belt-positioning booster seat 40-100 pounds. SIDE IMPACT PROTECTION: The Grow and Go's side impact protection helps keep your child safe through all of the 3-in-1 convertible car seat’s stages. EASY IN, EASY OUT: Harness holders keep the harness in an open position so it's easy to get your child in and out of the car seat. QUICKFIT HARNESS: With the QuickFit Harness you can easily adjust both the harness and headrest with one hand.