Kidfix2 S - Apertura

2 in 1 booster KIDFIX 2 S

R44/04 - Group 2/3 (15-36 kg)

The award-winning KIDFIX family has just added a new member: the 2-in-1 car seat KIDFIX² S (15-36 kg). Thanks to the V-shaped backrest with adjustable SICT system, the seat not only provides more space for the growing child, but also an excellent side impact protection. We recommend using the booster with backrest for as long as possible. However, for greater flexibility, the KIDFIX 2 S allows to remove the backrest when the child exceeds 135 cm in height. The SecureGuard system and the belt clip ensure optimal positioning of the seat belt when used as a booster seat.


The KIDFIX 2 S is available from authorized distributors.

V-shaped backrest

The highback booster is the safest option for a child and it is recommended that the child travels in it for as long as possible (up to 150 cm). Its thickly padded, soft side wings offer side impact protection from head to hip.
Thanks to its V-shape, the backrest adapts to the child's growth, providing a comfortable position and more space for the shoulder area as they grow.
As it is tilting, the backrest automatically adjusts to the angle of the seat.

KIDFIX2 S - Respaldo

Ergonomic headrest

The headrest has an ergonomic design to allow the child to sleep in the correct position. It can easily be adjusted with one hand to the correct position, just above the child's shoulders, even if the child is already occupying the seat.


The SecureGuard helps to protect your child’s delicate abdominal area by adding an extra – a 4th – contact point to the 3-point seat belt. By keeping the lap belt in an optimal position over your child’s pelvic bones SecureGuard helps reduce abdominal forces in the event of a frontal collision by up to 35 %*, and at the same time allows your child freedom of movement during the journey.
As for the upper and lower guides, they ensure that the seat belt is correctly positioned on the child's shoulders and hips, limiting misuse.

KIDFIX2 S - SecureGuard

SICT for increased side protection

The SICT system provides superior protection for the child in the event of a side impact. It reduces the impact force by minimizing the distance between the vehicle and the seat, and deforms to absorb the energy before it reaches the child. To activate the protection, simply adjust the SICT on the side closest to the door.


Removable backrest

The highback booster is the safest option for your child. For this reason, we recommend that your child travels in a highback booster for as long as possible.

However, we know that it is not always possible to use a highback booster, as in the following cases:

  • Sometimes you have to carry several children in the car, but you do not have enough space for several chairs with backrests.

  • It may happen that you want to continue using a seat beyond 135 cm in height, but the interior of the vehicle does not allow the headrest to be adjusted to its maximum height. In these cases, installing the booster with the backrest without Isofix, i.e. directly with the 3-point belt, can also be helpful.

  • Although it is not common due to the width of the backrest and its V-shaped design, it may happen that the child does not fit in the backrest.

  • Or it also may be useful for school trips or cab rides, if you need to bring your own seat.

In these cases, the KIDFIX 2 R provides a flexible solution by allowing to remove the backrest when the child exceeds 135 cm in height. Although the best solution is to always use the backrest, it is preferable for the child to ride on the booster with the belt clip and the SecureGuard, than to travel directly without any type of child restraint system.

Watch the video to see how to remove the backrest and fit the booster cushion

KIDFIX2 S - Cojín

Installation with ISOFIX or belt

The KIDFIX 2 R offers two installation options:
- Isofix and 3-point seat belt (consult the list of approved vehicles ).
- Vehicle´s 3-point seat belt (universal approval)
Watch the video to see how to fit the highback booster

KIDFIX2 S - Instalación

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.
Watch the video to see how to remove the cover

Made in Germany

All the KIDFIX car seats are completely designed, developed and manufactured in Germany. This allows Britax Römer to carry out a large number of tests in its crash test facilities and guarantee the highest possible quality. But the KIDFIX seats are not only tested in-house; the KIDFIX range seats are also among the most tested child seats by EuroNCAP. This means that they are regularly tested in the newest cars, with the most up-to-date safety technologies, both with and without backrest, with excellent results. Britax Römer closely monitors current developments in the automotive industry to be able to adapt its products accordingly and make them even safer.

Product specifications

Forward facing Highback booster (15-36 kg)
Dimensions: 67 - 85 cm (height) x 54 cm (width) x 39 cm (depth)
Weight: 7.2 kg
Approval: UN R44/04

KIDFIX² S - Dimensiones

Where to buy?

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