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Britax Grow With You

5.0 (1 review)


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Harnessed Booster by Britax

Grow With You™ harness-2-booster grows with your child from toddler to big kid.

It’s made with premium fabrics and padding for superior comfort and style. 2 layers of side impact protection surrounds the head, neck & torso. Plus, SafeCell Technology in the base creates a crumple zone that absorbs crash energy. Installing the seat is simple using the premium, quick-push LATCH connectors. And, with arm rests, cup holders, and harness comfort pads, even big kids enjoy the ride.


  • FROM TODDLER TO BIG KID – Easily transition from Harness to Booster – By tucking buckles and straps safely within the seat.
  • SHIELD YOUR CHILD – 2 Layers of Side Impact Protection – Energy-absorbing shell and foam-lined headrest protect your child’s head, neck, and torso.
  • ABSORB CRASH ENERGY – Patented SafeCell Technology – Creates a crumples zone in the car seat base that helps absorb crash energy.
  • STABILIZE THE SEAT – Industrial-Strength Steel Frame – Reinforces the seat structure to help keep it stabilized.
  • REDUCE FORWARD MOVEMENT – Patented V-Shaped Tether – Staged-release stitches help slow and reduce forward movement during a crash.
  • ADJUST WITH ONE HAND – 9-Position, Quick-Adjust Harness & Headrest – Move together to create the proper fit as your child grows.
  • RELAX & RECLINE – 2 Recline Positions – Help you find a comfortable fit for your child and the best fit for your vehicle.
  • KEEP SNACKS WITHIN REACH – 4 cup and snack holders – Keep drinks, snacks, and toys within your child’s reach.
  • Forward-facing Harnessed Weight: 11.3-30.0 kg
  • Forward-facing Harnessed Height: 85.0-125 cm
  • Belt Positioning Booster Weight: 18.0 -54.0 kg
  • Belt Positioning Booster Height: 110.0-160.0 cm
Weight0.00000000 kg
Product Weight

10.4 kg

Product Depth

53.3 cm

Product Width

48.3 cm

Product Height

63.5 cm (90cm with headrest fully extended)


Yes (Latch)

Seat Belt System

3 point seat belt or lap belt

Forward Facing


Rearward Facing


New Zealand Standard 'S' mark


Side-Impact Protection

Yes, 2 layers

Energy-Absorbent Foam


Expiry Date

9 Years from date of purchase

Manufacture Warranty

1 year

Age Range

Must be at least age 2 years and up to 12 years approx

Height Range

Forward Facing Harness: 85.0-125 cm, As Booster: 110.0-160.0 cm.

Weight Range

Forward Facing Harness:11.3 kg – 29.4 kg, Booster: 18 – 54.4 kg


5 point safety harness

Top Tether

Britax recommends that the top tether be used at all times when installing the child seat. Using the top tether will improve the stability of your child seat and reduce the risk of injury.






1 review for Britax Grow With You

  1. Lucy

    We just got this for our very tall 3yr old and its perfect shes much happier in this seat and easily installed

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  • I\'m wondering is this suitable for my car Mazda axela 2004?

    HI there, thank you for your inquiry, the Grow with you will be suitable as long as you have a teather hook in the back as it is required when forward facing. I hope this helps

    Question by : Hanna on Dec 16, 2021 02:24:51 PM
  • Hi, Would this seat be suitable for the middle seat in the back row?

    Hi there, thank you for your inquiry, as I am not aware of the vehicle, I can only suggest you either contact your local store or have a fitting done instore to confirm this. I hope this helps

    Question by : Lena on May 18, 2022 10:11:16 AM


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