100% NZ Owned and Operated, Child Restraint Specialists

Britax Grow With You

Britax Grow With You
NZ$ 499.00
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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.


  • SafeCell Technology acts as a crumple zone, helping to absorb crash energy.
  • Industrial strength steel frame reinforces the seat structure to help keep it stabilized.
  • 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.


  • Harness mode 11.3 – 30kg; Booster mode 18 – 54kg.
  • Stylish, soft-knit fabrics look great in your backseat.
  • Premium, quick-push LATCH connectors for simple, secure installation.
  • Color-coded belt guides make it easy for you and your child to route the seat belt through the right paths.
  • Flip-forward buckle stays out of the way for easy boarding.


  • 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 your growing child.
  • 2 recline positions help you find the most comfortable fit for your child and the best fit for your vehicle.
  • 4 cup and snack holders keep drinks, snacks, and toys within reach.
  • Harness comfort pads keep your child’s neck from rubbing against the harness strap.
  • Nap-friendly padding & fabrics for superior comfort and a quiet ride
  • Easy-to-remove cover for cleaning without uninstalling the car seat or removing the harness.
  • Easy-to-clean arm rests help your child ride comfortably


Proudly designed, tested and built in the USA with US and global components for safety and quality.

Forward-facing Harnessed Weight 11kg - 30 kg approx
Forward-facing Harnessed Height 86 cm - 125 cm approx
Belt Positioning Booster Weight 18 kg - 55 kg approx
Belt Positioning Booster Height 111 cm - 160 cm approx
Product Weight 10.4 kg approx
Product Dimensions (L x W x H) 53L x 48W x 63H cm
Headrest Fully Extended Height 90 cm approx
Seat Area Depth / Width 38D x 30.5W cm approx
Shoulder Width 30.5cm approx
Harness Slot Heights 9 positions, 30.5 - 50.8 cm approx
Buckle Strap Positions 2 positions, 17.8 - 22.8 cm approx