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When the child reaches 100cm and up to a maximum of 105 cm (max. 22 kg), you will need to change from the integrated 5-point harness to the car’s 3-point seat belt to secure the child in the seat. Thanks to the FLIP&GROW function, that’s now possible in a few simple steps.

Simply adjust the headrest and stow the harness in the backrest so it won’t get lost. Then, switch the FLIP&GROW adjustment plate so the SecureGuard is above the seat and you’re ready to go.  And because no parts have to be removed from the seat when changing stages, the seat can also be converted back at any time.

With the EasyRecline function, you can recline the seat to the child’s comfort without readjusting the installation.


Our highback boosters protect the child in 3 ways:

  • The seat shell provides head to hip protection for the child, especially in the event of a side impact.
  • The upper and lower belt guides provide correct positioning of the seat belt.
  • The padded headrest provides safety and comfort for your child’s head and neck.

Specially designed to control the movement of the child’s head, our V-shaped headrest ensures optimal protection in the event of a side collision while providing ultimate comfort at the same time.

The Top Tether minimises the rotation of the car seat and thus reduces possible injuries in the head and neck area in the event of a collision. Due to its twin anchorage points, the v-shaped Top Tether offers even greater stability and security for the child than a seat with conventional tethers.


With the harness, our soft performance chest pads fit comfortably on the child’s chest. They help reduce the child’s movement in the event of a collision, and add even greater comfort to the 5-point harness. Plus, they can be easily removed for washing without disturbing the harness.  In the event of a collision, the harness distributes the forces of the impact across 5 points, two at the shoulders, two at the hips and one where the harness buckles between the legs. This helps to protect the child from all directions of impact. 

As a highback booster, the SecureGuard helps to protect the 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 the child freedom of movement during the journey.

*Britax Römer internal tests with a Q6 dummy, representing an average 6 year old child

Additional information
Britax Colours

Midnight Grey, Space Black