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i-Size logo R129 & i-Size certified
Icon of a ruler with arrow pointing up 15 months to 12 years
Icon of curved lines with arrows pointing inward extra side impact protection

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product details


Just like any new parent, we put safety first and our Signature collection offers the “best in class” safety features to make sure your precious cargo is as safe as they can possibly be:


  • Certified to the highest R129 safety standards, including side impact testing
  • i-Size certification for a perfect fit in i-Size approved vehicles  
  • Extra side impact protection with our Guard Surround Safety™ panels mean you can travel without worry 
  • Tri-Protect™ headrest and our signature Intelli-Fit™ memory foam adds three more layers of safety
  • Steel reinforcement creates a secure and resilient shell



When they can’t be cradled in the comfort of your arms, you can still keep them cosy thanks to our Signature collection’s luxurious comfort details:


  • 3 cosy recline positions offer relaxed riding on the go
  • AutoAdjust™ shoulder panels expand out as the headrest raises for spacious comfort all around
  • Create a custom fit with the removable lower body insert to ensure both the harness and buckle are properly fitted to your child   
  • Built-in side ventilation maintains a cool airflow in all seasons 
  • Deluxe cushioning is snug, secure, and soft all at the same time 



Parenting is hard enough, so our Signature collection offers all of our parent favourite convenience features that make your life just a little bit easier:


  • Our Grow Together™ 9-position headrest and harness system is so simple you can work it with only one hand… even when the car seat is installed
  • Magnetic buckle holders keep the harness out of your way when you’re loading your child into their seat
  • Top tether and ISOFIX installation (instead of a load leg) save space in compact vehicles
  • 5-point harness stores inside the seat when using in booster mode
  • Colour-coded seat belt guides offer intuitive and secure buckling in high back booster mode
  • Machine washable covers remove easily for quick clean-ups



  • use forward facing only
  • Child height 76-150 cm, between 15kgs and 36kgs, approx 15 months to 12 years
  • Usable with a 5-point harness from 76cm-105cm or 19.5kg (15 months to approx. 4.5 years). Top tether and ISOFIX are required to install the seat when the 5-point harness is in use
  • Usable with a vehicle belt as a booster seat from 100cm-150cm (approx. 3.5 to 12 years)
  • ISOFIX connectors create an easy and secure installation, and coloured indicators provide a visual indication that the seat is connected correctly

Product Weight: 13 kg (weight does not include insert)


Testing Certification: ECE R129/03 and I-Size certification


Product Size: l 53-58 x w 47-58 x h 63-80 cm


how to & support
same note as i-Jemini, start with

Long-term luxury

The only car seat your child will need from 15 months to 12 years old, i-Plenti meets the highest R129 safety standards with i-Size certification and is trimmed with our most luxurious styling.

Closeup on a gray Joie I-Plenti car seat harness.

Shield a little longer

The 5-point harness fits children all the way up to 19.5 kg or 105 cm (approx. 4.5 years old), distributing force across their strongest body parts and removing risk of ejection during a crash.

Side view of a gray Joie I-Plenti car seat with a cutout indicating the steel reinforced shell.

Strong & secure

The reinforced steel shell sets an ultra-strong foundation for the i-Plenti™ car seat, providing rigid side impact protection that fights back against the strongest forces.


Grow up & out

Your growing child won’t feel squished as they reach new heights: The AutoAdjust™ side wings automatically widen when you raise the headrest, giving your passenger more shoulder space to stay comfortable in their car seat.


Kick back & relax

With no reinstalling necessary, parents can quickly fine-tune the recline for customised comfort on the go.

A gray Joie I-Plenti car seat facing at an angle, with a cutout graphic showing the layers of foam inside the headrest.

Layers of safety

The reinforced steel shell sets an ultra-strong foundation, while the state-of-the-art Tri-Protect™ headrest features 3 layers of foam including Intelli-Fit™ memory foam. As an additional safeguard, a Guard Surround Safety™ pod connects to the outer side of the headrest to absorb impact during a crash.

The Signature difference

There’s nothing like slipping into a timeless staple piece: that’s the feeling you’ll get when you snuggle your little one into a Joie Signature pushchair or car seat. Go on, have your moment.

Our materials

We test for more than 150 different toxic substances to ensure your child's gear is safe even down to its basic ingredients.

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