Britax Grow With You Harness-2-Booster Car Seat

Find a car seat that grows with your child from toddler to big kid age with the Britax Grow With You harness-2-booster car seat. This high back booster seat starts as a 5-point harness car seat and converts into a belt-positioning booster that works with your car's seat belt. Installing this toddler car seat is simple using the premium, quick-push LATCH connectors. 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 the seat to a belt-positioning booster. The color-coded belt guide helps you and your child route the seat belt through the right paths for a secure fit. This forward-facing car seat is made with naturally flame-retardant fabrics and foam that are safe to machine wash and dry. SafeCell Technology in the base acts as a crumple zone for additional protection for your growing child. The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe. This booster features armrests, 2 cup holders and stay-put harness pads, so even big kids enjoy the ride.

  • TWO DIFFERENT MODES: Harness mode is 25 lbs - 65 lbs, 34" - 49" height and booster mode is 40 lbs - 120 lbs, 44" - 63" NO ADDED FR CHEMICALS: Naturally flame-retardant fabrics and foam are made without FR chemicals  
  • COMFORTABLE RIDE: Premium padding improves comfort for your growing child  
  • STRONG CONSTRUCTION: Made with high-strength steel for reinforcement and stability  
  • PATENTED TETHER: V-shaped tether features staged-release stitches to help slow and reduce forward movement in a crash  
  • QUICK INSTALLATION: Quick-push LATCH connectors make secure installation quick and easy  
  • SAFETY YOU CAN TRUST: Equipped with SafeCell technology that acts as a crumple zone for added protection  
  • TWO LAYERS OF ENERGY MANAGEMENT: The protective seat shell and foam-lined headrest help absorb impact energy and are designed to help keep your child's head, neck, and body safe 
  • QUICK-ADJUST HARNESS AND HEADREST: These pieces move together for easy one-hand adjustments for a proper fit VERSATILE BUCKLE: The 2 buckle positions help you get a good fit for your growing child, and the flip-forward buckle flips out of the way for stays out of the way for easy boarding  
  • COLOR CODING: The color-coded belt guide helps you properly route the seat belt for safe use  
  • TWO CUP AND SNACK HOLDERS: Keep drinks and snacks within reach for an enjoyable car ride  
  • STAY-PUT HARNESS PADS: Soft comfort pads keep the harness straps from rubbing against your child's neck  
  • WASHER AND DRYER FRIENDLY: Removable cover can go in the washer and dryer for convenient upkeep 


  • Product Dimensions: 21" x 19" x 25"
  • Child Weight: 25-120 lbs
  • Forward-facing Harnessed Weight:25-65 lbs
  • Belt Positioning Booster Weight:40-120 lbs
  • Seat Area Depth/Width:15" / 12"


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