Britax Römer KIDFIX M i-SIZE


ECE R129 (i-Size) - 100 - 150 cm tall

Premium Line

Developed in partnership with leading car manufacturers, the Britax Römer’s highback booster KIDFIX M i-SIZE protects children from 100 to 150 cm in height, that is to say, from 3 and a half years to 12 years, approximately. Approved under the new ECE R129 (i-Size) standards, it comes with a redesigned seating area to offer an optimal response in the event of an impact.


Optimized seating area

The seating area has been redesigned in close partnership with leading car manufacturers to help reduce the neck loads by up to 50 kg, according to internal tests run by Britax Römer with a Q10 dummy, representing a 10-year-old child.

KIDFIX M i-SIZE - Asiento

Easy adjustable, ergonomic headrest

The headrest has been specifically designed to offer maximum comfort for children and can easily be adjusted to the correct position.

Helpful markings at the back of the headrest guide parents to find the right headrest height every single time when they change the seat between cars or transport multiple children in the same seat.

KIDFIX M i-SIZE - Reposacabezas

Highback booster protection

Our highbackrest boosters protect your child in three ways: the seat shell provides protection, especially in the event of a side impact; the upper and lower belt loops ensure the correct position of the seat belt, and the padded headrest provides safety and comfort for the child's head and neck.

KIDFIX M i-SIZE - Respaldo

Air ventilation

To keep the child comfortable even for/on long journeys, the shell has carefully placed air ventilation holes to ensure greater air circulation.

KIDFIX M i-SIZE - Ventilación

Installation with Isofix or seat belt

The KIDFIX M i-SIZE offers two installation options:
- Isofix and three-point seat belt
- Vehicle's three-point seat belt

Removable Cover

It is easy for the car seat to get messy: a drink can spill or the child may get car sick. That's why we have designed a seat cover that can easily be removed and machine washed.

Product specifications

With a width of 44 cm (without SICT), it is possible to fit/install three seats in the back row of a wide range of cars, especially those equipped with i-Size seats or with ISOFIX seats in all three seats.

Dimensions: 63-83 x 44 x 42 cm (height x width x depth)
Weight: 6.5 kg
Approval: UN ECE R129 (i-Size)

KIDFIX M i-SIZE - Dimensiones

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