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Product guide

Maxi-Cosi Kore i-Size High Back Booster Seat, 100–150 cm

The Maxi-Cosi Kore i-Size is a forward-facing high-back booster listed for children from 100 to 150 cm. It combines ISOFIX installation with a seat-belt guide and height-and-width adjustment, so it is aimed at families wanting a booster that can adapt as a child grows.

At a glance

  • The listing describes an i-Size Group 2/3 seat for 100–150 cm, approximately 15–36 kg.
  • The backrest adjusts in both height and width to accommodate growth.
  • The open seat design and belt guide are intended to make buckling up easier for children.
  • The Side Protection System Plus is described as glass-fibre shock absorbers in the side wings combined with energy-absorbing material.
  • The cover is removable and machine washable, according to the listing.
Price
£124.99Save 31%

Reference price: £179.99

Price checked: 14 Nov 2026

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Pros and cons

Pros

  • Height and width adjustment gives more scope to adapt the backrest as a child grows.
  • ISOFIX installation is intended to stabilise the seat, while the vehicle seat belt secures the child.
  • The open lower design provides access to the buckle and the belt guide is intended to help position the belt.
  • The removable, machine-washable cover is useful for managing spills.

Technical specifications

13 specifications
Identity
BrandMaxi-Cosi
Model8740550110
Child fit and installation
Recommended height range100 Centimeters
Maximum height recommendation150 Centimetres
Minimum weight recommendation15 Kilograms
Maximum weight recommendation36 Kilograms
Installation typeIsofix
OrientationForward Facing
Harness type3-Point
Dimensions and installation
Dimensions listed44D x 51W x 76H centimetres
Weight listed5.97 Kilograms
Materials and protection
Material listedGraphite, glass
ColourAuthentic Graphite

What to know before buying

Listing details to confirm

The listing calls the seat a 3-point harness model, while its description says the child is secured with the car's seat belt and the seat has a belt guide. Confirm the restraint method and age, height and weight guidance in the current instructions before use. The listing also gives a rear-facing maximum weight despite describing the seat as forward-facing. These details are inconsistent and do not establish a rear-facing capability.

Who is it for?

A good fit for

  • Families looking for a forward-facing high-back booster listed for children 100–150 cm.
  • Buyers who want ISOFIX fitting and a backrest that adjusts in height and width.
  • Children who are ready to use the vehicle seat belt with guidance from the seat.

Less suited to

  • Children below the listed 100 cm minimum height or outside the applicable guidance in the current seat instructions.
  • Buyers seeking a rear-facing seat or a seat with a separate internal harness, unless the manufacturer’s current instructions confirm suitability.
Maxi-Cosi Kore i-Size High Back Booster Seat, 100–150 cm · photo 2
Additional product photo 2

Customer reviews on Amazon

4.5 / 5 · 1,413 ratings
  • 5 stars77%77%
  • 4 stars11%11%
  • 3 stars5%5%
  • 2 stars2%2%
  • 1 star5%5%

Customer feedback reports comfort, sturdy construction, ease of installation and a good fit. Some feedback is mixed on the seat belt experience and value for money. Those points matter in day-to-day use, since the listing relies on the vehicle belt and a belt guide, but feedback does not establish how well it will suit a particular child or car.

Positive themes

  • Customers report comfort, easy installation, good fit and sturdy construction.

Mixed feedback

  • Feedback on the seat belt experience and value for money is mixed.

Frequently asked questions

What height range is the Maxi-Cosi Kore i-Size listed for?

The listing states 100 to 150 cm and approximately 15 to 36 kg. Follow the current seat instructions and applicable guidance for your child.

How is the Kore i-Size installed and how is the child restrained?

The listing describes ISOFIX installation and use of the vehicle seat belt with a belt guide. A separate detail labels the harness as 3-point, so check the current instructions to confirm the restraint arrangement.

Does the seat adjust as a child grows?

Yes. The listing says the backrest adjusts in both height and width.

Can the cover be washed?

The listing says the cover can be removed and machine washed. Follow its care instructions.

Maxi-Cosi Kore i-Size High Back Booster Seat, 100–150 cm · photo 3
Additional product photo 3

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