Grow With You Harness-2-Booster
$
239.99
In Stock Soon
color
Mod Black
1
In stock soon - notify me when available
Overview
Highlights
- 25- 120 lbs
- Washer and dryer-friendly fabric
- Naturally flame-retardant fabrics
- Two layers of side impact protection
- Four cup and snack holders
Description
The Grow With You Harness-2-Booster grows with your child from toddler to big kid. The removable car seat cover is safe to machine wash and dry and the fabrics are naturally flame-retardant, which means there’s no need for added FR chemicals.
You can quickly adjust the 9-position harness and headrest using just one hand for the proper fit as your child grows. Once they’re ready to use the seat belt, the 5-point harness tucks away, transitioning to a belt-positioning booster. Color-coded guides help you route the seat belt through the right paths.
What we about it
Covers you from baby to big kid, plus extra safety features.
Details
- Harness mode: 25 lbs-65 lbs, 34”-49”
- Booster mode: 40 lbs-120 lbs, 44”-63”
- Washer & dryer-friendly fabric
- Naturally flame-retardant fabrics with no added FR chemicals
- Premium, Quick-Push LATCH Connectors for simple, secure installation
- SafeCell Technology acts as a crumple zone, absorbing crash energy to help keep it away from your child
- High-strength steel frame reinforces the seat structure to help keep it stabilized
- Patented V-shaped tether with staged-release stitches helps slow and reduce forward movement during a crash
- 2 layers of side impact protection: energy-absorbing shell and foam-lined headrest protect your child’s head, neck and torso
- 9-position, quick-adjust harness & headrest move together using one hand for the proper fit as your child grows
- 2-position buckle can be moved outward to accommodate growing child
- 2 recline positions help you find the most comfortable fit for your child and the best fit for your vehicle
- 4 cup & snack holders keep drinks, snacks and toys within reach
- Color-coded belt guides make it easy for you to route the seat belt through the right paths
- Removable cover for cleaning without uninstalling the car seat or taking off the harness
- Stay-put, soft comfort pads keep your child’s neck from rubbing against the harness strap
- Nap-friendly padding and comfy fabrics
- Flip-forward buckle stays out of the way for easy boarding
- 1 year limited warranty
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Customer reviews
117 Ratings
1-10 of 117 Reviews
Cannot get a replacement cover
While I really wanted to like this carseat I am very disappointed in the customer service. The cover that goes over the foam next to my daughters head fell off and got lost and now the foam will not stay in place. Everytime you bump it, it falls off. I called customer service to get a replacement cover and that is not something they offer. I would have to purchase the entire set of covers for $80+ shipping just for 1 piece. Extremely disappointed since I have already spent $300 to purchase this…
Oct 2, 2025
Extremely Loud Squeaky Foam
The seat constantly squeaks because the foam is rubbing against the plastic. It's a very high pitched noise that is incessant. I tried to place something in between the headrest and the foam to reduce the friction, but it didn't work. I've read other recommendations to lower the headrest, but what's the point if the seat won't "Grow With You". Based on the size of my kid, lower the headrest is not an option.
Sep 10, 2025
Wish the backrest was removable.
Thought this would last us till child’s 8th year when legal to let the booster go. But at 7yo she’s getting uncomfortable with the backrest. Wish we’d bought one where you can remove that part of the seat.
Aug 27, 2024
Squeaky foam
The headrest uses a different phone than the side bolsters and just from the normal movement of the car driving down the highway squeaks constantly and is extremely annoying. I would not recommend this seat.
Jun 4, 2024
Simple to Clean and built in "Sauce Space"
We were given the Britax Grow With You Harness-to-Booster Car Seat to try out from the Stellar Product Testing Panel. My daughter and I were pretty excited to upgrade her to a big girl car seat like her older brother. She’s a preemie and petite, so it’s taken her much longer to get big enough for a safe upgrade. As a mom to 3 kiddos who are five years old and under, I was pretty interested in seeing if it really was easy to install and remove the fabrics for cleaning.
We went on a road…
We went on a road…
Dec 29, 2022
Perfect for Years of Growth!
We were in need of a new car seat for my 4yr old. He is on the smaller side and we wanted something that we knew would last for the many years to come he will be needing a booster seat. We have always loved Britax because of their highly rated safety and the quality of the overall product.
Some may say its on the higher end of the price range but I truly believe that this is worth EVERY PENNY!
We are a two car family so having a seat that is easy and quick to take out and put in…
Some may say its on the higher end of the price range but I truly believe that this is worth EVERY PENNY!
We are a two car family so having a seat that is easy and quick to take out and put in…
Dec 29, 2022
Easy to clean, easy to install
Easy to clean, easy to install I received this booster seat from the Stellar Product Testing Panel. I like britax products for safety and looks. The grow-with-me seat was easy to install, and my almost 4 year old reports that it is a “really comfortable and really cool big boy chair” and he also says he can see more stuff out the windows. I also like how easy it is to remove the padding and clean it, that definitely gives this seat some points. I also like that Britax does not add any flame…
Dec 28, 2022
Fantastic booster seat
I was given this booster seat to try as part of the Stellar Product Testing Panel, but the thoughts and reviews are my own. I absolutely love this car seat/booster seat! It was incredibly easy to install in my car, which I can't say I've experienced before. The size is absolutely perfect and my son says it's incredibly comfortable. I love that I can easily clean this material as well.
While my son is not in a booster seat just yet, he's right on the cusp so I played around with…
While my son is not in a booster seat just yet, he's right on the cusp so I played around with…
Dec 28, 2022
Great transitional seat!
I received this booster seat to try as part of the Stellar Product Testing Panel. My son, who just turned 4, had been using a convertible seat until the start of the school year, when we moved up to a transitional type booster (not this one). I mention coming from another booster so you better understand my appreciation for the Britax Grow With You Harness-to-Booster seat. Within the first 2 weeks in my prior booster, I regretted my purchase. It was a blessing when 3 months later, we received…
Dec 28, 2022
Mediocre car seat that will grow with your toddler.
I received the Britax Grow With You Harness-to-Booster Car Seat from the Stellar Product Testing Panel. I was very excited to test this product! However, this car seat was incredibly difficult to install. Even when the seat was tethered, it moved around more than an inch. It was also a struggle to adjust the straps and harness features when trying to strap my child safely in. The feature I liked the most was how padded the seat was. I also like how the covers are easily removable to be cleaned.…
Dec 28, 2022
