The Maxi-Cosi Kani 4-in-1 Convertible Car Seat is a top choice for parents searching for the best convertible car seat in NZ, growing with your child from newborn to booster.
This extended-use car seat supports rear-facing, forward-facing and booster modes, covering approximately 0–45kg for long-term safety and value.
Its slim design fits three across in many vehicles, making it ideal for families needing multiple car seats in smaller cars.
With side-impact protection, adjustable recline, and premium breathable fabrics, the Maxi-Cosi Kani delivers comfort, safety and convenience for everyday travel.
Maxi Cosi Kani 4-in-1 Convertible Car Seat
$599.00
4-in-1 Convertible Car Seat (Birth to Booster)
Grows with your child from newborn to approximately 10 years, transitioning through rear-facing, forward-facing, high-back booster and backless booster modes.
Extended Rear-Facing & Booster Use
Supports rear-facing from 5–40 lbs, forward-facing from 22–65 lbs, and booster mode up to 100 lbs for long-lasting safety and value.
Ultra-Slim Car Seat Design – Fits 3 Across
The space-saving slim profile allows three car seats across in many vehicles, perfect for growing families.
Quick & Secure Installation
Features one-click UAS (LATCH) connectors for fast, simple installation and a secure fit in your vehicle.
10-Position Adjustable Headrest & Harness
The no-rethread harness system and 10 adjustable headrest positions adapt easily as your child grows.
5-Position Recline for Comfort
A one-hand adjustable recline provides a comfortable and secure seating position in both rear- and forward-facing modes.
ClipQuick™ Magnetic Chest Clip
The auto-magnetic chest clip helps parents buckle quickly and securely every time.
EcoCare Sustainable Fabrics
Made with 100% recycled EcoCare fabrics from plastic bottles, delivering soft, breathable comfort that is machine washable and dryer safe.
Premium Comfort & Practical Details
Includes two removable BPA-free cup holders, vegan leather trim, and a plush seat cover for a stylish, comfortable ride.
Isofix: Yes
Seat Belt System: Yes
Weight and Height Range: Rear-facing =
Weight and Height Range: Forward-facing =
Weight and Height Range: Booster mode =
NZ Standard ‘S’ Mark: Yes, compliant with FMVSS 213
Side-Impact Protection:
Energy Absorbent Foam: Yes
Level Indicators: Yes
Expiry Date: 10 years after the date of manufacture
Warranty: Lifetime

