Name: Britax Römer Kidfix Pro i-Size Car Seat - Harbor Blue - Style
Brand: Britax Römer
SKU: 49683-39439
Price: 149.00 GBP
Availability: InStock
Rating: 5 (26 reviews)

Britax Römer Kidfix Pro Car Seat - Harbor Blue - Style-Car Seats-Harbor Blue- | Natural Baby Shower

Britax Römer Kidfix i-Size Pro Car Seat - Linen Grey - Lux-Car Seats-Linen Grey- | Natural Baby Shower

Natural Baby Shower - supporting growing families for over 19 years.

£179.00

£149.00Save £30

Colour: Harbor Blue Style

Better Than Black Friday offer

In stock | Get it by Fri, Nov 13^th

Free delivery | order by 4pm for next day
Easy returns within 60 days
Seen a better price? Price match here
Gift-wrap unavailable

BTBF-pdp-banner-web | Natural Baby Shower

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.

Head-to-hip protection
Safety beyond standards
Quick-remove washable cover
Advanced Side Impact Protection
Comfortable, protective headrest
Can sit three seats in the back of a car
Enhanced air ventilation for your child's comfort, ensuring cool rides on any day
The KIDFIX PRO's 6.7kg weight and easy ISOFIX install make switching cars a breeze
SecureGuard protects your child's tummy by adding an extra contact point to the lap belt
Shock-absorbing foam XP-PAD protects your child's neck and chest in the event of a frontal collision
Choose ergonomic comfort as your child grows with the KIDFIX PRO - from the age of 3.5 to 12 years
The Britax Römer KIDFIX PRO has been named winner of the latest consumer test conducted by the German automobile club ADAC and the consumer organization Stiftung Warentest. With an overall score of 1.8, the KIDFIX PRO stands out not only as the winner in its category (100–150 cm) but also as the overall top performer in the October 2025 test.

1 x Britax Römer Kidfix Pro i-Size Car Seat

Suitable from approx. 3.5 to 12 years
Child height: 100-150cm
Measurements: H63-83 x W44 x D42cm
Product weight: 6.7kg
Forward-facing only
Installation: vehicle seatbelt + (optional) ISOFIX

Machine washable

Britax Römer brand warranty

2-year standard warranty

We carefully select every product in our range for its superior safety, sustainability, and quality. All items are backed by a comprehensive manufacturer’s warranty for added peace of mind. In the unlikely event of a fault or failure, our Customer Service team will provide full support throughout any warranty claims process.

UK delivery

Free delivery on orders over £75.
For orders under £75 delivery options start from £3.95.
Need it sooner? Express and weekend delivery options are available, with all available services and prices offered at checkout. View full delivery information.

60 days to be sure
Take your time to make sure it’s right for your family. We offer 60-day UK returns, with a simple online portal and tracked returns. View returns eligibility and full terms.

International orders

We offer international delivery, with duties and taxes included in the product price. Delivery charges are calculated at checkout.
Some size, weight and regional restrictions apply. International orders have a 30-day returns window.

EAN | Barcode: 4000984939439
MPN: 2000040914
Boxed weight: 7370 g

2b808278-80ee-4f1e-8d74-2cc9ff678f3d | Natural Baby Shower

Britax Römer Kidfix Pro i-Size

We recently bought this car seat for our 3½-year-old, and we absolutely love it. The first thing we noticed was how comfy it is. The fabrics feel super soft and my little one is very happy sitting in it and seems much more settled on car journeys.

We found it so easy to install, which was great as we regularly swap it between our car and the grandparents (who have also love it!) without any hassle.

It feels sturdy, well-made and is super practical. Highly recommend for any parents who are looking for their next stage seat that little one can continue growing into.

Reviewed by Gemma

Product | Britax Römer Kidfix Pro i-Size Car Seat - Harbor Blue - Style

Safety Beyond Standards

Nothing is more important than your child’s safety. That’s why we designed the i-Size approved KIDFIX PRO for your peace of mind, knowing your cherished passenger is perfectly protected. The unique safety feature combination is the heart of the KIDFIX PRO, offering protection from every angle. With the SICT, XP-Pad and SecureGuard, your child is optimally protected in both side and frontal impacts. Every detail is developed in Germany and designed to give you confidence every time you buckle up your child.

Britax Römer Kidfix Pro Car Seat - Teak - Style-Car Seats-Teak- | Natural Baby Shower

Comfort as they grow

Imagine your little one experiencing ultimate ergonomics in the KIDFIX PRO from the age of 3.5 to 12 years. From its soft padding to its slim, yet spacious design, every detail is crafted to ensure your little one travels in comfort. The easy adjustable headrest grows alongside your child to provide support and a perfect fit. And for those warmer days, the carefully placed air ventilation holes provide a touch of coolness while the STYLE version adds a gentle mesh fabrics, creating a blissful time.

Science of Comfort

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.

britax-romer-kidfix-pro-lifestyle_3cd16ff4-3d51-4be4-ae32-ad5cfcaca2bd | Natural Baby Shower

Britax Römer Kidfix Pro Car Seat - Linen Grey - Lux-Car Seats-Linen Grey- | Natural Baby Shower

Comfortable, protective headrest

Always installed securely

Advanced Side Impact Cushion Technology (SICT) keeps your little one safe in the event of a side collision.

Overall rating: 4.9615383 / 5 from 26 reviews.

AI Generated Review Summary

The Britax Römer Kidfix Pro i-Size Car Seat offers a safe and comfortable ride for children aged 3.5 to 12 years. Customers appreciate its high quality and quick delivery. Its ergonomic design and advanced safety features ensure a secure journey.

Summary topics

Product Quality (30%): A substantial number of customers brought up that the product has great quality and is very comfortable.
Delivery Speed (20%): A significant amount of customers expressed satisfaction with the quick and timely delivery of the product. (13 out of 20 reviews)

Review topics: ["delivery","quality","feels","car seat","seat","service","base","colour"].

Review highlights

"The ordering process was straightforward, delivery was quick, and the communication throughout was excellent." — Christian M.
"Great service, quick delivery, speedy return as I ordered wrong one." — Ann S.
"Great quality product." — Maria B.

Reviews

Great car seat for 3-point belt users

"Good slim base. Lovely color. Comfortable and is well built. Fast delivery. The crotch guard I think is a bit unnecessary. I slotted it away after a couple of days as it came in the way of my daughter's dresses and skirts and wasn't the easiest to navigate around or use."

— Jai L. (5/5)

Comfy looking seat

"Fits my 5.5 year old comfortably. They can get in themselves and report that it's a comfortable seat. One of the safest options for forward facing."

— Mel T. (5/5)

Great car seat

"My son absolutely loves this seat. He chose it himself based on what was most conmfy and looked best to him."

— Jennifer L. (5/5)

Excellent experience

"So after I ordered this exact car seat from an online company who kept delaying the order without notification. I turned to natural baby shower who had the same deal and the order was delivered and in my home within 3 days! Excellent service. 100% recommend."

— Jennifer L. (5/5)

Great product

"A very muted pink but still aesthetically pleasing. It’s very easy to install and our almost 4 year old is very secure and comfortable in it. Very pleased."

— Candice T. (5/5)

Love

"Amazing seat. So easy to use and fast delivery. Like it so much bought a second for in use in family members car"

— Rebecca (5/5)

Super impressed with both Natural Baby Shower and the Britax Römer Kidfix i-Size Pro.

"The ordering process was straightforward, delivery was quick, and the communication throughout was excellent. The car seat itself is fantastic. The quality and finish are exactly what you'd expect from Britax Römer, and the Warm Caramel colour looks even better in person. It's incredibly well made, feels exceptionally safe, and was easy to install. Most importantly, our son finds it really comfortable, even on longer journeys. If you're looking for a premium, safe, and comfortable car seat backed by great customer service, I wouldn't hesitate to recommend both this product and Natural Baby Shower. We'll definitely be shopping with them again."

— Christian M. (5/5)

Great car seat. It was

"Great car seat. It was the first “big girl” seat for my daughter after ERF and she’s six. Was a bit worried about the strap between the legs, but so far so good. Ordered two for grandparents cars, and fits nicely in Peugeot 208 and Honda Civic. Summer cover is a must, otherwise the fabric doesn’t have a very nice feel to it in the summer with shorts and short sleeves."

— Nicoleta P. (5/5)

Excellent seat, easy to fit

"Excellent seat, easy to fit and my grandson loves it"

— Mrs M. (5/5)

Kids car seat

"Great quality product. Timely delivery. Thank you!"

— Maria B. (5/5)

Britax Römer Kidfix Pro i-Size Car Seat - Harbor Blue - Style