Maxi-Cosi Kore i-Size

Our score 9.33 / 10

Research by Peter Crona Last updated Method How we research

Before You Buy

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From 100 cm, up to 150 cm (~3.5-12 years).

Maxi-Cosi Kore i-Size

Pros

  • The open sides make the buckle easier to reach for an older child learning to fasten independently.
  • Height and width adjustment keep the high back relevant across the long 100-150 cm booster stage.

Cons

  • A child still needs to remain upright with the lap and shoulder belt correctly routed for the whole journey.
  • The widening back can be the deciding constraint beside other child seats, so test the actual rear bench.
Dutch brand
Height Range
100-150 cm
Seat Use
Booster
Install Method
ISOFIX or vehicle seat belt
Product page
Open product page
Price/Buy
Check Price at Amazon

Maxi-Cosi Kore i-Size is a high-back booster for the 100-150 cm stage, once a child can sit consistently in the vehicle belt. Its open sides make the buckle easier to reach, while the back adjusts in height and width as the child grows. That combination suits an older child working towards independent buckling without giving up high-back support.

Test it in the actual rear seat before buying. The widening back can reduce space beside another child seat, and easy buckle access depends on the car’s buckle position. Confirm that the lap belt sits low, the shoulder belt runs correctly through the guide and the headrest does not interfere. Independence does not remove the adult check: inspect the belt on every trip and make sure it has not twisted or slipped out of position after the child buckles.