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Britax Grow With You Harness-to-Booster Seat

Britax Grow With You Harness-to-Booster Seat

Regular price $209.99 USD
Regular price Sale price $209.99 USD
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Shipping calculated at checkout.

The Britax Harness-to-Booster Seat grows with your child from toddler to big kid.  The seat belt paths are open, clearing the way for quick & confident installation. The steel tensioner automatically tightens the seat into your vehicle, taking care of the hard work for you. 


  • Grows with your child from toddler to big kid.
  • Energy-absorbing shell and foam-lined headrest protect your child’s head, neck, and torso.
  • Exclusive SafeCell Technology acts as a crumple zone, absorbing crash energy to help keep it away from your little one.
  • 9-Position, quick-adjust headrest & harness to create the proper fit as our child grows.
  • Patented V-Shaped Tether staged-release stitches help slow and reduce forward movement during a crash.
  • High Strength Steel Frame reinforces the seat structure to help keep it sturdy and stabilized.
  • 2-position recline finds the most comfortable fit for your child and the best fit for your vehicle.
  • Nap-friendly padding and fabrics for superior comfort.
  • Built-in armrests help your child ride comfortably.
  • The removable cover is easy to remove without taking off the harness.
  • SafeWash variants covers are soft to the touch and safe to machine wash and dry; Knit construction is naturally flame retardant. 
  • Four cup and snack holders keep snacks, drinks, and toys within reach.
  • Suitable for children 25-120 lbs.
  • 1-Year Limited Warranty.

Dimensions & Weight

  • Product Dimensions: 21" x 19" x 25"
  • Product Weight: 23 lbs.
  • Forward-facing Harnessed Weight: 25-65 lbs.
  • Forward-facing Harnessed Height34" - 49".
  • Belt-Positioning Booster Weigh: 40-120 lbs.
  • Belt-Positioning Booster Height: 44" - 63".

Britax strongly recommends that children should be secured with a harness system until they exceed the weight or height limits specified.

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