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Britax Grow With You Harness-to-Booster Car Seat

The Britax Grow With You harness-to-booster car seat is designed to be the last car seat your child will need. It’s perfect for kids starting at 25 pounds who need the security of a harness and transitions into a booster seat as they grow. The best part? The Grow With You works for kids up to 120 pounds, keeping them safe and secure for longer. 

What Is It? A Safe, Simple Solution for Growing Kids

The Britax Grow With You Harness-to-Booster is built on two core concepts: safety and convenience. It features the famous Britax ClickTight installation system, which makes securing the seat in your car so easy—just open the seat, buckle the belt, and close it for a snug fit. Further, the 9-position harness grows with your child, and the transition from harness to booster is truly seamless. And with two layers of side-impact protection, a sturdy steel frame, and Britax’s SafeCell technology, this seat is designed to absorb crash forces.

So now let’s talk comfort. The Grow With You’s padding and machine-washable cover translate into easy cleanups, while features like cup and snack holders keep everything within reach for your little one. It’s super comfortable for kids who are getting to the age where they’d rather not be in a car seat, which helps because you do want to keep your child in a car seat as long as possible.

What Parents Are Saying

Here’s why parents are loving the Britax Grow With You:

• Danielle from PA: "Love this seat! Super durable and easy to install. Nice and tight. Comfy for my daughter who is 5 and has plenty of room to grow with the harness!"
• BritaxKool-aid from Omaha, NE: "The ClickTight is so secure, the seat doesn’t budge at all in my car. My son also loves the cup holders and says the seat is comfortable . . . "
• Katie from Norwalk, OH: "Absolutely love this seat for my preschool kids. They're big kids, and I know this will keep them safe for a long time. It grows with your child, and it installs like a breeze."

Meet the Britax Grow With You Collection

The Britax Grow With You harness-to-booster car seat comes in a variety of styles to suit every family’s needs. There’s a style for every child’s personality. 

Shop Britax Grow With You at Albee Baby

Shop the Britax Grow With You harness-to-booster car seat at Albee Baby, and enjoy benefits like fast, free shipping on orders over $99 and our industry-leading rewards program (you’ll be getting a lot of points towards future purchases when you buy the Grow With You).