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Britax Grow With You ClickTight Harness-2-Booster - Black Contour

This harness-2-booster seat grows with your child from toddler to big kid.

The Grow With You ClickTight is a top-selling seat that pairs an extra layer of side impact protection along with the super-easy ClickTight Installation System – so you know your child is always properly secured. 

Forward Facing (harnessed), and Booster Seat

ClickTight Installation with

 Latch (this is the American version of ISOFIX) / Seatbelt

Child's Size
11.3 - 54 kg / 85 - 160 cm
Child's Age (approx.) 2-12 years
Direction Forward facing only


  • 2 layers of side protection formed by a deep foam-lined shell and quick-adjust head protection.
  • Impact-absorbing base compresses to reduce the rough force of a collision.
  • stabilising steel frame offers superior strength where you need it most: at the connection point to the vehicle.
  • V-shaped tether minimises seat rotation with a unique two-strap design.
  • Britax-patented staged-release stitches slow the seat’s forward movement during a crash. 
  • Impact-absorbing harness pads slow your child’s forward movement during a crash.
  • Compatible with SecureGuard Clip (sold separately) to keep proper seatbelt alignment over hips and prevent children from sliding under the seatbelt in booster mode.


  • ClickTight Installation System makes safe installation as simple as buckling a seat belt.
  • Easy-on/off lower anchors for an alternative installation method.


  • Hassle-free transition from harness to booster mode by tucking away straps in the seat.
  • Easy-buckle system keeps buckles and straps out of your way when positioning your child.
  • Easy-remove cover pulls free of the car seat for cleaning without having to remove the harness.
  • Cup holders and storage for drinks, food and toys.


  • No-rethread 9-position harness quickly adjusts with the push of a button as your child grows.
  • Quick-adjust 2-position buckle easily moves outward as your child gets bigger.
  • Multiple-position recline allows your child to relax in comfort.
  • Plush memory foam padding for premium comfort.



Compatible Accessories

Britax Seat Saver Waterproof Liner

Britax Vehicle Seat Protector

Britax Kick Mats x 2

Britax Car Seat Travel Bag


Child Weight - Forward Facing Harness 2 years and 11.3, up to 30kg
Seated Shoulder Height - Forward Facing Harness Up to 49.53cm
Standing Height - Forward Facing Harness 85 to 125cm
Child Weight - Booster 18 to 54kg
Seated Shoulder Height - Booster Up to 52.07cm
Standing Height - Booster 110 to 160cm
Product Weight 12kg
Product Dimensions 67.3L x 45.1W x 63.5H (cm)
Seat Area Depth / Width 34.3cm

Shoulder Width

Harness Slot Heights 31.75 - 49.53 (cm)

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