Graco Nautilus 3-in-1 Car Seat, Matrix 3-in-1 multi-mode Car Seat for longer use 20 pounds to 100 pounds Extended 5-point harness for children 20-65 pounds Converts to High-back belt positioning booster for child 30 pounds to 100 pounds Converts to backless booster for child 40 pounds to 100 pounds Steel reinforced frame for durability Once [...]