Britax Romer Kidfix R129 Classic Car Seat - Black
748/0111£149.00
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About this product
Moments spent together on the road are precious. That's why our engineers delved deep into studying the human body model, ensuring the car seat embraces the youngest and the eldest with equal comfort. The result is not just ergonomic perfection but a haven of tranquility on every journey, promising restful rides for the entire family.
Head to Hip Protection. The seat shell of the highback booster gives head to hip support for your little one, while the belt guides ensure correct positioning of the seat belt.
Overview:
- Suitable for children from 15kg to 36kg.
- Suitable for children between 100 and 150cm tall.
Attachment method:
- Integrated ISOFIX.
- Seat attachment method: ISOFIX and 3 point seat belt.
Safety:
- ECE R129 compliant.
General information:
- Size H83, W44, D42cm.
- Weight 6.5kg.
- Manufacturer's 1 year guarantee.
5
5 reviews
100%
Recommended this product
Each review is verified as authentic by our independent third party and we only publish reviews from customers or Argos Testers who have purchased or used the item. Customers are incentivised to submit product reviews as part of a prize draw.
Safe, Sturdy, and Surprisingly Comfortable
This is an impressive option for parents who prioritise safety without compromising on comfort. The build quality immediately stands out — it feels solid, secure, and well-engineered, exactly what you’d expect from Britax. Installation was straightforward, thanks to the ISOFIX connectors and clear instructions. Once fitted, the seat feels extremely stable with minimal wobble. The R129 safety standard offers extra peace of mind, and the side-impact protection is noticeably robust. Comfort-wise, my child was very happy. The padding is generous, the seat shape is supportive, and the fabric feels durable yet soft. The headrest adjusts smoothly, which is ideal for growing kids, and the overall design feels sleek and modern. If I had to pick one small downside, it’s that the seat is a bit on the heavier side — but given the level of protection it offers, that’s a trade-off I’m very willing to accept. Overall, the Kidfix R129 Classic is a reliable, well-designed car seat that delivers top-tier safety and comfort. A great choice for long-term use and peace of mind on every journey.
Ranj, 35 - 44, Brentwood, Essex
A sturdy well designed Car seat
Fantastic Booster seat, the isofix points move together and not separately making it easier to position and clip into the brackets at the rear of the seat. My child seems well supported and protected once strapped in. Overall a very sturdy well designed isofix high back booster seat.
Loz1908, 35 - 44, Lincolnshire
Doesn’t move an inch when fitted
This is super easy to fit into your car and isn’t bulky at all! I love the clip feature on the shoulder part that keeps the seatbelt from slipping out of the loop! My daughter says it’s much comfier than her previous seat and she seems to sit much better in it! I love that it’s isofix as the sear doesn’t move an inch once it’s in place! The lever to move the isofix fixtures is well hidden taking no comfort away from the comfort of the seat
Ceri111uk, 35 - 44, North wales
Great car seat
Easy to install and my two absolutely love them. Great for smaller cars as gives room in the back for growing kiddos. Would recommend.
Em1235
Great carseat
Easy to install and offers lots of side protection.
Suzy, 25 - 34, Eastbourne
Hello there,
Britax Romer Kidfix Classic Car Seat - Black
This can be used with the cars 3 point harness.
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The customer and brand answers you’ll see above are submitted independently. As we don’t review these answers, we can’t take responsibility for anything they may say. The responses from Argos colleagues are accurate at the time of publishing. For the latest info, you should check the product page.