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Icon of a checkmark inside a shield to indicate R129 and i-Size certification. i-Size certification
Ruler icon with an arrow beside it pointing up to indicate growth. 7 position ISOFIX
Icon of a lightbulb with marks to indicate its glowing. adjustable support leg

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product details


  • Secure and intuitive installation using 7-position ISOFIX connectors that create a custom fit for newer and older vehicle models
  • Adjustable support leg reduces movement and provides extra stability in the event of a collision, and stores under your base when not in use
  • I-Base lx™ 2 is installed with rigid ISOFIX connectors that latch to your vehicle’s anchor points



  • Install the i-Base™ lx 2 once and you’ll have easier ins and outs with its compatible ECE R129 car seats including Calmi™ R129, i-Level™ Recline, i-Quest™, i-Snug™ 2, i-Gemm™ 3, and i-Juva™
  • Quick release button pops your baby car seat off in seconds, making it easy to move baby in and out of the car without taking them out of their seat
  • Take the guesswork out of vehicle belt installation thanks to colour-coded belt guides that walk you through the install in seconds



  • Usage: with compatible infant carriers: Child height 40-85cm, less than 13kg, approx birth to 12 months
  • Installs with ISOFIX

Product Weight: 5.75 kg 


Testing Certification:  ECE R129/00 and i-Size certification


Product Size: l 66.6 x w 20.4 x h 16.4-64.4 cm

how to & support
 Close-up view of the ISOFIX connectors on the Joie i-Base lx car seat base.

a stress-free installation

ISOFIX connectors lock the base securely to your vehicle’s anchor points in one click and in just a few seconds. Easy. Peasy. Done!

 Joie i-Base lx car seat base from a right angle with rebound bar extended and a checkmark icon beside it to indicate i-Size and R129 certification.

a guaranteed fit

i-Size certification guarantees the i-Base lx™ 2 will fit in i-Size approved vehicles, taking the guesswork out of finding your perfect seat for your family’s car.

 Close-up view of the side of Joie i-Base lx car seat base with an inset demonstrating the installation indicator.

worry-free installation

Never second-guess your installation again thanks to colour-coded indicators that confirm a successful install in seconds.

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.

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