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Check mark shield icon. R129 certified
 Two arrows pointing in with squeezing lines icon. side impact protection
Measurement tab with arrow on the left pointing upward icon. Grow Together™ harness
product details


  • Meets the highest ECE R129 safety standards, including side impact testing   
  • Side Impact Security offers protection for the head, body and hips 
  • Tri-Protect™ headrest featuring Intelli-Fit™ memory foam is designed for optimal security and absorbency in the event of a collision  
  • Large, colour-coded belt path opening at back of seat for ease of install
  • Installs with a 3-point vehicle belt  



  • 4 recline positions: 1 rear facing and 3 forward facing 
  • Padded infant head and body support cradle the tiniest riders as they transition from tiny to toddler 
  • Plush cushioning and knit fabrics keep little ones cosy and cool



  • Grow Together™ multi-height headrest and harness system adjust simultaneously and require no re-threading of harness 
  • Removable, washable fabrics for convenient cleaning 
  • One pull motion easily tightens the 5 point harness



  • Use rear and forward facing
  • Child height  
    • rearward facing: 40-105 cm less than 18 kg, approx birth to 4 years
    • forward facing: 76-105 cm, less than 18 kg, approx 15 months to 4 years
  • Installs with a vehicle's 3-point seat belt


To comply with the ECE R44 OR ECE R129 car seat regulations of this car seat, we've included the weight/height at which the car seat can turn forward. However, we strongly encourage keeping your little one rear-facing as long as possible by maxing out the recommended rear-facing usage of the car seat. 


Product Weight: 7.71 kg 


Testing Certification: ECE R129/03 


Product Size: l 50.7 x w 43.6 x h 60-66 cm 


how to & support
Joie Steadi R129 car seat with harness clipped in with a black colour, at an angle facing to the right with orange circle around a check mark on the right-side of car seat.

highest safety standards

Meets the highest R129 safety standards, including side impact testing, for a supremely secure ride you can feel good about from birth to approx. 4 years.


headrest & harness

The Grow Together™ headrest and harness adjust simultaneously so you don’t have to fuss with rethreading as your child goes through growth spurt faster than you can keep up with!

Joie Steadi R129 car seat with harness clipped in with a black colour, at an angle facing to the right and arrow pointing outward at headrest with two lines.

shielded from side to side

The Tri-Protect™ headrest features three layers of side impact protection, including Intelli-Fit memory foam for an extra layer of shock absorbency.

no such thing as too safe

Your baby gear should work hard for you every single day. That’s why we push our products to the extreme during testing: We want to make sure they’re up for any challenge you may face.

super strength materials

We use only high-quality materials in creating your gear: like aero-grade aluminium, super-strength steel and undiluted plastics.