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Britax Romer KIDFIX i-Size High Back Booster Car Seat - Cosmos Black

3.5y to 12y | Forward-facing
SKU: 47595-12089
Regular price £199.00 Sale price £159.00 Save £40
Collect 159 points, worth £4.77, rewards info
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  • Free delivery | 60-day returns
  • Gift-wrap unavailable
  • BIG Green Offer | while stocks last
  • In stock - selling fast  | Get it by  Sun, Jun 14th

The Britax Römer Kidfix Pro i-Size is a safe, cosy haven for your growing child. Designed for ages 3.5 to 12 years (100–150 cm), this high back booster combines thoughtful ergonomics with advanced safety features, including SICT, XP-Pad, and SecureGuard*, giving your little one protection from every angle. 

Its slim yet spacious design ensures a comfortable fit in almost any car, while adjustable headrest and soft padding grow with your child. With i-Size approval and German-engineered quality, the KIDFIX PRO turns every journey into a safe and enjoyable adventure. 

  • Secure guard
  • Air ventilation
  • Slim + compact design
  • High Back booster protection
  • Comfort + Practicality at its core
  • Advances in side impact protection
  • Easy adjustable, ergonomic headrest
  • Unique protection for the neck + chest
  • Redesigned seating area for optimum crash performance
  • Suitable from approx 3.5 to 13 years
  • Child height: 100 - 150cm
  • Measurements: H63-83 x W48 x D42cm
  • Product weight: 6.7kg
  • Forward-facing only
  • Installation: vehicle seat + (optional) ISOFIX
  • Quick-remove machine washable cover

Britax Römer brand warranty

  • 2-year standard warranty

We want you to shop with confidence, so we provide a warranty on all our products against faults and breakage. Some manufacturers offer extended warranty coverage; see further info here.

We provide a range of fast and efficient shipping services to ensure your products arrive on time and in perfect condition.

  • Free shipping on all orders over £75
  • For orders under £75, shipping £4.50 Local Pickup / £4.95 Home Delivery
  • Express and weekend services available
  • International shipping available – duties, taxes, and shipping costs are all calculated and paid at checkout for a hassle-free, customs-cleared delivery

Some size/weight restrictions apply for certain regions. Full details at checkout.

Questions? Our friendly team is happy to help! For more details, check our delivery page.

Returns

We offer a 60-day returns policy. For full details, see our full returns policy.

  • EAN | Barcode: 4000984312089
  • MPN: 2000035120
  • Boxed weight: 7370 g

Product | Britax Romer KIDFIX i-Size High Back Booster Car Seat - Cosmos Black

Carbon Neutral, GREEN SENSE + Made in Germany

britax-kidfix-lifestyle-2_117f0f20-5e08-4aec-811c-02c8c24c29f5-Natural Baby Shower
britax-kiddix-lifestyle-5-Natural Baby Shower

Comfort + practicality at its core

Expert protection

britax-kiddix-lifestyle-4-Natural Baby Shower
britax-kiddix-lifestyle-Natural Baby Shower

Unique protection for the neck + chest

britax-kiddix-lifestyle-2-Natural Baby Shower

SecureGuard

britax-kiddix-lifestyle-3-Natural Baby Shower

Highback booster protection

Overall rating: 5.0 / 5 from 5 reviews.

AI Generated Review Summary

Summary topics

Review topics: ["car seat","padding"].

Review highlights

Reviews

Amazing

"Everything is as expected, it is with good quality and with easy installation."

Georgi I. (5/5)

Happy Customer

"Competitive price quick delivery of a quality brand. Only gripe with Britax, no paper instructions included as standard"

Simon P. (5/5)

Fab seat

"We bought this for our older child about 3 years ago and now buying it for number two. Super easy to install and suitable as a first booster all the way up to when they don’t need a seat (daughter is a tall 7. 5yo and there’s still lots of growing room). Like the additional safety features. Perfect in every way!"

Emily B. (5/5)

Great Product,

"I recently purchased the Britax Romer KIDFIX i-Size High Back Booster Car Seat - Cosmos Black and I am beyond impressed with its quality and features! It ticks all the boxes for what I was looking for in a car seat. The level of comfort this car seat provides is exceptional! The padding is soft yet supportive, and my child seems to love it, even on longer car rides. I was initially concerned about installation, but the process was surprisingly easy with the clear instructions and helpful system. This is hands down the best car seat I’ve owned. It’s a bit of an investment, but the safety, comfort, and ease of use make it 100% worth it. If you’re looking for a reliable car seat that will last you for years, I highly recommend this one!"

Csaba C. (5/5)

Great service

"Thank you fir your prompt service orderd and collected inv1 hr."

jackie B. (5/5)

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