Britax ADVANSAFIX i-Size

Britax ADVANSAFIX i-Size



Free UK Delivery for orders over £40

The Britax ADVANSAFIX i-Size keeps your child safe and comfortable, from 15 months to 12 years. The seat is approved to the latest i-Size standard and comes with a 5-point harness offering an extended use up to 21kg.

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. No parts have to be removed from the seat when changing stages, so the seat can also be converted back at any time.

The ADVANSAFIX i-Size also features SICT (Side Impact Cushion Technology), which reduces impact forces by minimising the distance between the car and the car seat and absorbs the energy before it reaches your little one. To benefit from the protection, simply adjust the SICT on the side of the car seat closest to the door.

When using the 3-point seat belt, the shock-absorbing XP-PAD prevents the impact of your child’s chin on their chest, absorbing up to 30%* of the energy in the case of a frontal collision. As well as this, the SecureGuard holds the lap belt in the optimal position over the pelvic bones, reducing the risk of abdominal injuries. This also helps reduce abdominal forces in the event of a frontal collision by up to 35%**.


Dimensions(cm): 60-83H x 44W x 47D

Weight: 11kg

Forward facing installation 76 – 150 cm


*Britax Römer tests 2019

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

Additional information

Weight 11 kg
Dimensions 47 × 44 × 60-83 cm

Cosmos Black, Storm Grey


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