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My DD is 16 months I am pregnant with twins that are due in Oct. I am trying to figure out how long my DD will be in here britax roundabout carseat. It says 40 inches and 40 lbs is the max. Around what age/weight do they move up to a booster type seat? Sorry if this is dumb question I am just not sure! Just trying to decide what we need to buy. Thanks!
Re: XP: What is after a regular carseat?
A lot of kids fit in the regular convertible carseat like you have until 4 - my friend's DS is on the small side and still in his and he just turned 5 (but he's like 20%tile for height and weight).
After that there is a high-back booster, then later a belt-positioning booster. The longer you can keep her in a 5pt harness rather than just the car's seatbelt, the safer she will be.