Check the listing for details. Maxi-Cosi RodiFix Booster Car Seat with Side Impact Protection, Multiple Colors. Color: Seafaring, Condition: New. Listed at 199.99 USD. 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 up. 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 an epic road trip. Vehicle shoulder and lap belt guides make it easier for your big kid to buckle themselves, which gives them a sense of independence and you a bit of freedom. Fits children 40–100 lbs. and 43.4"–57". Actual fit may vary.