Free delivery £75
Our 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 21 kg. Easily converted for use with the vehicle’s 3-point seat belt, the proven technologies of XP-PAD and SecureGuard offer frontal impact protection, whilst the SICT protects your child from side impacts.
Maximum safety – every day
Your child’s safety is of the utmost importance to us. That’s why the new ADVANSAFIX i-SIZE has been developed and approved to the new i-Size standard (R129), and is also equipped with advanced safety features such as the XP-PAD, SecureGuard and SICT all of which 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. And because no parts have to be removed from the seat when changing stages, the seat can also be converted back at any time.
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.
Finding it hard to pick what's best for your little one? We are always happy to help you. Book an appointment and visit our store for a more explanatory and practical experience. We are looking forward to see you!
Store Opening Times
Monday - Friday
11:00 - 17:00
11:00 - 16:00
Book An Appointment With Us Today
Yes! At Designer Baby UK, we offer custom bundles to ensure you're well prepared for your beautiful journey ahead. Contact us for your custom bundle. Please send us a message on our live chat or drop an email & we'll respond right away.
Yes, we do deliver to Northern Ireland; however, additional charges may apply. Head over to the delivery section for more information. Thank you
Yes, we collaborate with the world's most prestigious brands to bring you the best products for your child. A manufacturer's warranty is included with all of our products.
Yes, we do provide custom payment plans. A custom payment plan requires a £500 minimum spend. Please contact us if you are interested in applying. Please send us an email or leave a message on live chat.
Yes, we offer a manufacturer's warranty on all of our products. Please get in touch.
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Visit us in London
Address : 195 Old Oak Road, London, United Kingdom, W3 7HH
Store Opening Times : Monday to Friday - 11:00 - 18:00, Saturday - 11:00 - 17:00, Sunday - Closed