Too old for a booster? Says who? – CarseatBlog

Product Description

This isn't a full review, but I wanted to share our experience with the original Britax Frontier model in booster mode.  In short, we love it :).  This is Karsten last summer, he was almost 12, about 90 pounds, and about 60 inches tall.  That's the top listed height limit for the original Frontier model.

By what age should your kid stop using a car seat? - Quora

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Century Boost On™ 2-in-1 Booster

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