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Britax Romer Kidfix III S Storm Grey

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Britax Romer Kidfix III S Storm Grey Britax Romer Kidfix III S Storm Grey Britax Romer Kidfix III S Storm Grey Britax Romer Kidfix III S Storm Grey

Britax Romer Kidfix III S Storm Grey

Available for immediate dispatch
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item features:
  • Suitable from 3.5 to 12 years of age
  • Protects from head to hip
  • Durable, easy-care materials
  • Shock-absorbing foam pad
  • Large, ergonomic seating area
Full product information

The new Britax Romer Kidfix III S is a forward-facing highback booster that's packed with useful safety features and ergonomic designs that make it one of the most comfortable seats on the market. Suitable from 3.5 to 12 years of age (15 to 36 kgs), the Kidfix III S protects your little ones from head to hip, and supports kids of all sizes as they grow throughout the years. The highly durable, easy-care materials ensure the seat remains in good condition for the entirety of its use, and make cleaning up day-to-day messes quick and simple. 



The newest feature on the latest addition to the Kidfix family is the shock-absorbing foam XP Pad, which sits across your child's chest and around the vehicle's seat belt. The XP Pad helps to absorb up to 30% of energy in the event of a frontal collision, while preventing your child's chin from rebounding off of their chest. The additional padding also helps to limit the jerking forward head movements that often occur in this type of accident, protecting your little one's delicate neck from further injury. Finally, the XP Pad cushions your vehicle's seat belt, limiting discomfort on the road and potential injury in the event of a collision. 


The SecureGuard technology featured on the Kidfix III S is instrumental in protecting your child's abdominal area should you ever find yourself involved in a collision. SecureGuard works by adding an additional 4th point of contact instead of the standard 3 created by your vehicle's 3-point seat belt, resulting in higher dispersion of force across a wider surface area. SecureGuard also holds the seat belt in the optimum position to reduce the risk of injury, and has proven to reduce abdominal forces in the event of a frontal collision by as much as 35%! 


The advanced Side Impact Cushioning Technology (SICT) is the best way to protect your child in the event of a side-on collision, and works by providing an additional barrier between your child's seat and the door, reducing the amount of space between the two and helping to absorb energy and force before it reaches your little one. The SICT system is easy to use, simply pop it out from the top of your child's seat on the side closest to the door. 


The adjustable headrest of the Britax Romer Kidfix III S is designed to suit children of all ages, even as they grow, and should be positioned just above your child's shoulders for optimum protection. It can be easily adjusted with just one hand, and keeps your child's head supported if they fall asleep, ensuring they are kept safe should they be sleeping when you encounter an accident. 



The seating area of the Kidfix III S is approximately 20% larger than similar models on the market, providing plenty of space for growth. The improved shape and additional padding makes for a comfortable seat even for older children, and the ergonomic design ensures a comfortable seating position for children of all sizes. 


The backrest of the Kidfix III S is V-shaped, leaving plenty of room for your child's back and shoulders as they grow and develop. Additionally, the backrest of the seat automatically adjusts to the angle of your vehicle's seats, providing a more comfortable and natural position for your little one when on the road. Finally, the headrest is well padded so your child can nap or relax comfortably in their seat without straining their neck. 


Additional Information

Spills and messes are inevitable when you're travelling with children. That's why the covers of your Britax Kidfix III S can be easily removed and are suitable for machine washing, so you can keep your seat looking fresh and new throughout its life.


The Kidfix III S can be installed into your vehicle in two ways: either with the ISOFIX connectors and your car's 3-point seat belt, or with the seat belt alone. If you are unsure whether your vehicle has ISOFIX anchorage points you can speak to your car dealership, check with Britax's Fit Finder, call us on 0117 986 8184, or send us an email. Our experienced team would be more than happy to discuss whether this seat is the right fit for your vehicle. 


Britax Romer Kidfix III S ToddlerBritax Romer Kidfix III S ChildBritax Romer Kidfix III S Pre-Teen


  • Suitable from 3.5 to 12 years of age
  • Protects from head to hip
  • Durable, easy-care materials
  • Shock-absorbing foam pad
  • Large, ergonomic seating area
  • SecureGuard helps protect your child's abdominal area
  • Advanced Side Impact Cushioning Technology (SICT)
  • Adjustable headrest and backrest
  • Belted or ISOFIX installation
  • Removable, machine washable cover

Dimensions (H x W x D): 85 x 54 x 43 cm


Weight: 8 kg

Suitability: 3.5 to 12 years (15 - 36 kgs)


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We aim to dispatch all “available for immediate dispatch” orders placed by 12pm the same working day.  Exceptions include made to order items for example some nursery furniture or direct ship items sent by the manufacturer directly to the customer.  In these cases an approximate delivery schedule is shown next to the product.


Our standard delivery cost is £4.99 for orders under £49.99.  Orders over £49.99 is free of charge.  Exceptions apply please view our Delivery & Dispatch page for detals.
Any items “available for immediate dispatch” will have the choice of standard delivery (2-3 working days) or express delivery (1-2 working days) this can be selected during the checkout process.
Orders for delivery to select Scottish post codes and Scottish Highlands, UK Islands & Northern Ireland may incur additional costs. These schedules would exclude made to order and direct ship items. 
Please note that some nursery furniture deliveries will be to the customer's door, this may exclude internal apartment doors.
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We offer a 14 day return policy allowing you to decide if the goods are as expected.  During this time you may return the goods at your expense or request collection with our courier company at a cost of £18 per parcel.  If the item has been used you will be unable to return the item under distance selling regulations.
Any damage in transit of shortages must be reported with 48 hours of receipt of the goods after this time claims will not be accepted.

Tutti Bambini Returns:

You can request to return a Tutti Bambini item within 28 days of delivery providing the item is in its original packaging and in pristine condition. The Following charges will apply dependent on the original delivery method:

  • Single items weighing less than 15kg- £15.00
  • Single items weighing more than 15kg- £25.00
  • Non-assembled room sets- £50.00
  • Assembled room sets- £150.00

For non-assembled and assembled room sets, the above charges will also apply if the customer is not present to receive delivery.

For more detailed information please read our terms and conditions.

Nursery Furniture

Wood samples are available upon request.

Delivery of nursery furniture to certain locations within the United Kingdom may be restricted.  For example Isle of Wight, Isle of Man, certain Scottish postcodes, Highlands & Islands, and Northern Ireland. 

For our furniture terms and conditions of sale please refer to our terms and conditions page under the section Nursery Furniture Return Conditions

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Britax Romer Kidfix III S Storm Grey