The ADVANSAFIX i-SIZE - test winning safety for children from 15 month up to 12 years.

The ADVANSAFIX i-SIZE has been awarded TEST WINNER status by Stiftung Warentest (11/2020) in the category of i-Size: 76cm to 150cm.

Maximum safety – every day

Advanced safety features such as the XP-PAD, SecureGuard and SICT provide the best possible protection in any type of accident.

Furthermore, your child can benefit from the safety of the 5-point harness for longer as the seat has been designed for usage with harness up until 21kg.

Extra comfort & flexibility – for every family

The ADVANSAFIX i-SIZE offers maximum comfort for your child, together with complete flexibility.

Thanks to the FLIP&GROW function, you can easily change from the integrated 5-point harness to the car’s 3-point seat belt as your child moves to the next stage ( 21 kg or 102 cm).

Quality – Made in Germany

To guarantee the highest quality possible, we keep the whole product development process under one roof, from the initial idea right up to the finished product. Plus, our car seats are regularly tested in our in-house, state-of-the-art crash test facility at Britax Römer Germany.

Discover the ADVANSAFIX i-SIZE product family

Age Group
15 months - 12 years | 76 - 150 cm |
15 months - 12 years | 76 - 150 cm |
Made in Germany

- XP Pad
- Secure Guard
- 5-point harness for longer

- SecureGuard
- 5-point harness for longer


- EasyRecline

- EasyRecline

From 1 399,00 zł
1 129,00 zł