The RodiSport Booster Car Seat is designed to easily transform from a traditional booster car seat to a backless booster. That means your not-so-little one can continue to ride protected and comfortably until they’re big enough to sit in the back seat without the extra boost. The 1-hand headrest adjustment with 7 height positions helps you keep up with growth spurts, and the multiple recline positions offer your little one added comfort whether you’re out running errands or on a long road trip. Vehicle shoulder and lap belt guides make it easier for your big kid to buckle themselves, giving them a sense of independence and you a bit of freedom. Fits children 40–100 lbs. and 43.4"–57". Actual fit may vary. Not all children will comfortably fit in the seat for the full weight and height ranges listed.