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Britax Romer Kidfix i-Size Car Seat - Cosmos Black

Code: TrH3WND5ar
  • £159.00
  • RRP £219.00
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Britax Romer Kidfix i-Size Car Seat - Cosmos Black

Britax Romer Kidfix i-Size Car Seat - Cosmos Black is a new generation of Kidfix that has been developed in partnership with leading car manufacturers. This gives the ultimate car travel safety to your child. What's more, you'll love that it's equipped with the proven technologies of the XP-PAD and SecureGuard. All whilst the new design SICT protects your child from side collisions. Suitable from 100 to 150 cm tall (approximately 3.5 to 12 years old), this i-Size car seat will see you through years of travel.

Why Should I Choose Britax Romer Kidfix i-Size Car Seat - Cosmos Black?

Britax Romer Kidfix i-Size Car Seat - Cosmos Black is a must-have i-Size high back booster from Britax Romer. This generation of Kidfix has all of the trusted safety features of previous models, plus more.

Expert Protection

Britax Romer have designed and approved the Kidfix i-Size to the highest i-Size standards. They've developed every feature on the seat with one thing in mind, and that's maximum protection. The Kidfix sports proven technologies of the XP-PAD, SICT and SecureGuard. What's more, the redesigned seating area of optimum crash performance is combined with these features. This offers all-round protection. Install this car seat with your vehicles ISOfix points for ultimate protection.

Advanced Side Impact Protection - SICT

Britax Romer's SICT offers superior protection to your child in the event of a side collision. It reduces impact forced by minimising the distance between the car and the car seat. It then deforms to absorb energy before it reaches your little one.

Comfort And Practicality At Its Core

Additionally, you'll love that comfort and practicality come as standard with the Britax Romer Kidfix i-Size. Britax Romer have generously padded soft fabric covers and have carefully placed air ventilation holes on the shell, to ensure superior comfort. What's more, you can install three Kidfix i-Size seats in the back row of a wide range of cars (check compatibility) due to the slim design of the seat. Furthermore, Britax Romer have included headrest markings to help parents find the right headrest height every time.

Sustainable Quality

Lastly, Britax Romer have the cleverly engineered Kidfix i-Size to weigh around 1.3 kg lighter than its predecessor. Additionally, Britax Romer make this seat in their factory in Germany. This helps with shorter transport routes and minimises the impact on the environment. Britax Romer have also replaced their packaging with sustainable options. You'll find the Kidfix i-Size packed in plant-based bags and recycled cartons. Even the tags are biodegradable on soil.

What Are The Specifications For Britax Romer Kidfix i-Size Car Seat?

Suitable from 100 - 150 cm tall (approx. 3.5 to 12 years old)

Weight: 6.7 kg

Height: 63 - 83 cm

Width: 48 cm

Depth: 42 cm

Dimensions (H x W x D): 63 - 83 x 48 x 43 cm

Install using ISOfix: this car seat has to be installed using the vehicle's 3-point seat belt as well as the ISOfix anchorage points in your vehicle. Check compatibility on Britax's Fit Finder.

Install using 3-point seat belt: you can also solely use the vehicle's 3 point seat belt to install the car seat

Do I Receive A Warranty?

Yes, Britax offer a 24 month manufacturers warranty against any manufacturing faults or defects. Proof or purchase is required. Go to Britax's website for more information. This applies to UK Mainland only.


Delivery within the UK Mainland (does not include Northern Ireland)*

  • FREE Next Business Day Delivery (order by 13:00, weekday deliveries only) for UK Mainland orders over £50
  • £5 Next Business Day Delivery (order by 13:00, weekday deliveries only) for UK Mainland orders under £50
  • £8.95 per box surcharge for Specified Weekday
  • £18.95 per box surcharge for Saturday Delivery
  • "Sold out" items are currently unavailable
  • "Direct - Delivery Date To Be Advised" items are delivered directly by the manufacturer according to timescales they dictate. Refer to product page for best guess estimates

*Excludes remote locations where surcharge of £20 per parcel is applicable

*Please note that deliveries to Scotland can take an extra day to be delivered

Delivery to UK Islands & Highlands*

  • £15 per item to Northern Ireland
  • £20 per item to Islands & Highlands (see list below) 
  • £50 per item to Channel Islands 
  • The standard delivery time to UK Islands & Highlands is 3 - 5 working days. 

*We deliver to Western Isles, Scottish Isles, Shetland, Orkney, Isle of Skye, Isle of Man, Isle of Wight, Highlands and Remote Areas

*Remote locations are subject to surcharge of £20 per parcel

*Please note that you will be contacted after order placement with regards the number of parcels required to ship your order should it be more than 1. 


Delivery to Mainland Europe*

  • £30 per parcel, for multiple parcels, multiple charges apply (please see below)
  • The standard delivery time to mainland Europe is 3 - 5 working days depending on geographic location. 

*We deliver to Austria, Belgium, Bulgaria, Czech Republic, Denmark, Estonia, Finland, France, Germany, Hungary, Ireland, Latvia, Lithuania, Luxembourg, Netherlands, Northern Ireland, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden.

*Excludes remote locations where surcharge of £20 per parcel is applicable.

*Please note that you will be contacted after order placement with regards the number of parcels required to ship your order should it be more than 1, multiple charges will apply. 

*All products by Britax, Graco, Joie, Nuna are restricted from being shipped outside the UK Mainland. Orders for these products with delivery addresses outside of the UK mainland will not be shipped. 

Delivery Timing

Occurs Monday to Friday, generally 9am - 6pm (excluding public holidays). Please note that collections occur Monday to Friday (excluding public holidays).

Please Note

  • If the buyer wants to cancel the order that is already in transit you simply reject delivery 
  • If the buyer accepts the parcel and then cancels the order, the return costs are at the buyers expense 
  • If a delivery is rejected or 3 delivery attempts are made without success the order will be automatically returned to sender
  • Cost to attempt re-delivery of an order is £15 per parcel for UK mainland & £30 per parcel for European addresses
  • Orders travelling outside UK mainland: You may wish to arrange insurance against loss or damage 
  • We may use recycled packaging if the packaging provided by the manufacturer isn't sufficient. Please check contents. Any parcel refused without checking will be subject to £15 returns charge
  • Please note that product warranties are not valid outside of the UK mainland, we will try to help you as best we can with parts and fixes but delivery costs are chargeable 
  • If paying by card over the phone the delivery address must be the same as the billing address so that we can help prevent fraud. (If proof of address can not be provided) 

We offer a 30-day return policy on all non-disposable items that are unused [Consumer Rights Act 2015]. If you are not satisfied with the products you purchased, simply send them back to us unused, in the original packaging and in resellable condition (at your own cost and risk). Include your order number and name. 

Conditions for refunds are:

  • Item must be with us within 30 days of receipt
  • We will repay the amount to the payment method used, eg. paypal, credit card, debit card
  • Delivery costs to return the item will not be refunded 
  • The product must be unused and returned with all original packaging
  • The product and packaging must be in resell-able condition
  • We reserve the right to not reimburse for any used goods 


  • Cancellation and return of special order items and assembled furniture may be subject to a charge for us to re-stock
  • If you do not want to arrange your own return we can do so at a cost of £15 per package and per attempt (UK mainland only)
  • Individual items from bundles or packages are not returnable. Bundles & packages must be returned in full 
  • If an item from a multi item purchase is returned delivery charges will be recalculated and applied to the remaining live order 
  • If need be, we can supply a suitable transport carton at a cost of £10


Return address: 

1 Old Park Farm 
IP13 0LZ

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