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Britax KIDFIX ISOFIT High Backed Booster Group 2/3 (Black Thunder)

4.7 out of 5 stars 56 customer reviews

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  • ISOFIX system anchors the seat directly to the car's ISOFIX connection points
  • Optimum side impact protection with deep, softly padded side wings
  • Seat belt guide correctly positions the 3-point seat belt over the child's shoulder and pelvis
  • Indicators confirm that the ISOFIX hooks are engaged
  • Seat grows with the child suitable from 15-36 kg (approximately 4-12 years)
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Product Information

Technical Details
Model Number2000007891
Item Weight8 Kg
Product Dimensions45 x 49 x 86 cm
Item model number2000007891
Additional product featuresisofix
Frustration-free packagingcertified frustration-free
  
Additional Information
ASINB00AE2OWN0
Best Sellers Rank 24,956 in Baby (See top 100)
Shipping Weight11 Kg
Date First Available2 Jan. 2013
  
 

Product Description

Product Description

Features of the Kidfix Isofit seat
Features of the Kidfix Isofit seat. view larger

A safe and comfortable seat for the older child

The Kidfix Isofit car seat is Britax's test winner in the Group 2-3 category, offering the best in all-round comfort and protection. Suitable for children between 15 and 36 kg (approximately 4 to 12 years old), the seat is ideal for parents or grandparents moving children between different vehicles, particularly cars with Isofix fittings.

Isofit makes fitting simple but secure

Isofix is an internationally recognised way of fixing a child car seat to a vehicle without using a seatbelt. As of February 2011, it is required by law that the system be integrated into a minimum number of seats in all new cars. Isofix anchorage points are installed in the vehicle with matching connectors on the child safety seats, minimising the risk of the car seat being installed incorrectly.

The Isofit system is specific to Group 2-3 child car seats, and uses the Isofix safety system for fixing the seat in the car. In the event of an accident, the system allows the seat to move slightly forwards with the child, keeping the seatbelt in the correct position and controlling the energy levels more efficiently. The direct connection to the car chassis prevents side movement of the seat and improves protection from a side collision.

Optimum side impact protection

One out of four car accidents is a side collision, and side collisions account for 20% of child fatalities, so it is vital to provide side impact protection for your child. The Kidfix has deep, softly padded side wings which ensure your child is protected in the event of a side collision by absorbing the crash energy, reducing the impact on your child. During sleep and rest, they support your child from the sides and help to keep your child in the correct position.

Seatbelt guides
Insert Alt Text here
Keep Cool Cover (sold separately) regulates your child's temperature on hot days.

The Kidfix car seat does not have an integral harness; instead, your child is secured using the car's standard three-point seatbelt. Children can be injured if the seatbelt is not correctly positioned across their body, so the Kidfix has guides to help you correctly position the seatbelt over your child's shoulder and pelvis, away from the vulnerable neck and stomach areas.

Why buy a Group 2-3 car seat?

A Group 2-3 car seat is designed for children weighing between 15 and 36 kg (approximately 4 to 12 years old, but it is the weight that decides which seat you need). Since April 2008, the Highway Code has specified that each child who is less than 1.35 metres tall or younger than 12 must be secured in an appropriate child restraint system which has been successfully tested according to ECE 44/03 or 44/04 standards. A child car seat gives the child a higher sitting position, ensuring the adult seatbelt can be positioned correctly across their body.

When should you move your child up to using a Group 2-3 car seat?

For safety reasons, you should keep your child in each stage for as long as possible, until they reach the weight limit or their head reaches the top of the seat. Move from a Group 1 seat when the upper edge of the shell is roughly at eye level of the child, or they exceed the weight limit. Do not move too early to a Group 2-3 because these seats are wider to accommodate larger children. Also, a younger child's shoulders are too narrow to hold to the safety belt securely. A small child can therefore easily slip out from under the belt, especially when they fall asleep during the journey.

Features of the Kidfix Isofit car seat
  • Isofit system anchors the seat directly to Isofix connection points
  • Optimum side impact protection with deep, softly padded side wings
  • Seatbelt guides help you correctly position the three-point seatbelt over the child's shoulder and pelvis
  • Indicators confirm that the Isofit hooks are engaged
  • Seat grows with the child, suitable for use from 15 to 36 kg (approximately 4 to 12 years old)
  • Easily accessible seatbelt path
  • Height-adjustable headrest to 11 positions
  • Adjustable backrest allows installation in a wide range of cars
  • Multi-recline position when secured with Isofit
  • When secured with Isofit, no need to strap the seat in when not in use
  • Easy to transfer between cars
  • Softly padded and washable cover
  • Option to install with Isofix connection points or three-point seatbelt

Car seat safety essentials

  • Never buy a second-hand car seat – you can not know its full history, and it may have been weakened or damaged in a previous incident or have parts missing
  • Buy the right car seat for your child's weight – age ranges are just guidelines
  • Move your child up to the next car seat group when they outgrow their current seat, but don't rush to do this too soon
  • Install the seat according to the manufacturer's instructions
  • Always use the car seat, even on very short journeys

Why choose a Britax car seat?

Britax logo

When you buy a Britax car seat, you can be reassured that you are benefitting from over 40 years of experience and innovation in child safety. Britax's products are tested to the highest standards, and it is one of very few brands to own in-house crash-test systems – the kind used in the automotive industry – ensuring it provides optimum protection and safety for children. Beyond this, Britax listens to its customers and feeds their experiences into future product developments, so that their car seats and travel systems meet real-life needs.

N/B: The logo on the product may vary from this image, due to a change in our logo design. The design of the product has not changed.

Box Contains

  • 1 x KIDFIX
  • 1 x User Guide



  • Customer Questions & Answers

    Customer Reviews

    4.7 out of 5 stars
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    Top Customer Reviews

    Verified Purchase
    This is an update of my review of the previous version of this seat. The previous version was called 'Britax Max/Black' while this new version is called 'Black Thunder'. Which? magazine appears to regard them as the same seat and the only difference I can find is a change to the cover finish, which now has a stylised check pattern on the arms.

    ISOFIX/ISOFIT child seats fix to metal anchor points built into the back of many car's seats and are ideal if you can leave the seat fixed in your car most of the time as they tend to be quite heavy. These ISOFIT seats are so much more secure than traditional belted versions it is amazing and they have the advantage that even when a child isn't belted into them they are still fixed in place and won't fly around the car in a crash. However, for flexibility the ISOFIT mounting 'arms' can be folded in underneath this seat and it can then be used in a traditional belted configuration if you need to use it in a car that doesn't have ISOFIT mounting points.

    A clear pictorial guide to installing the seat is shown on the outside of seat itself so you don't need to refer to the manual, although it is very straightforward anyway. The manual and the list of approved vehicles is located in a slot in the base of the seat - which is a a nice touch to help ensure they say with the seat rather than getting lost in the back of a drawer.

    We had some difficulty getting this installed in a 2010 Toyota Verso, but on Googling this appears to be an issue with Toyota's seat cover design and having manually stretched the covers a little and using the supplied plastic guides it fitted eventually. While previously these plastic guides were bright yellow, the ones that came with this are very dark grey so are not obvious if they have to be left in situ.
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    Comment 47 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Verified Purchase
    easy to fit and comfortable for the little user , originally found the back a bit upright but the seat can be tilted back and worth removing any headrest behind it to allow comfort for child,can be a struggle to get the belt fitted but this seems to be standard on all seats for this age group.
    Comment 4 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    When you move up to a highback booster it is only the childs weight holding the seat in so when going round corners the seat will tilt slightly especially with lighter children, and if the seat isn't strapped in when empty then break hard and you will have a loose seat smashed into the back of your seat (any impact on that seat will reduce safety and ANYTHING loose in the car is a potential hazard in a high speed crash) with the isofix it means that the seat is held firmly in position but still easy to remove to swap cars or make room for adults. The isofix can be tucked back into the seat if it needs to be used in a non-isofix car. Very sturdy and safe seat, I have my son in this seat, he is 7 1/2 and will be in it until he is either 36kg or 135cm. For even more safety Britax do do a seat with even more side impact protection although it does greatly reduce the space in the back of the car if you need to use the middle seat.
    Comment 9 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    By NjMac on 27 Jun. 2013
    Verified Purchase
    I already owned one of these for my older son so when my younger son (now 4) had run out of leg room behind the front seats I knew this was the right purchase. height adjustable, isofix fittings, the possibility to slide the seat forward a fraction (gives a slight recline to the back rest so the boys can sleep and we generally keep it this way because it's very slight) all combine to make this a great buy.
    I'd love this seat to have a 5 point harness instead of just using the car's seatbelt but I can't find that combination anywhere.
    Comment 2 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Verified Purchase
    was in side impact accident so was looking for replacement seat with good side impact protection without going overboard and compromising childs need to see! can be used with or without the isofix system. when isofixed the seat obviously remains fixed when child not using seat so prevents seat moving about. it can also be fixed in different positions enabling slight recline. 6 year old loves it and feels safe and secure in it after our accident. she tested alot of seats by sitting in car seats and flinging her head to the side, if her head fell forward she discounted the seat as not safe whereas in this one, her head was stopped from falling forward after hitting side. brilliant seat
    Comment Was this review helpful to you? Yes No Sending feedback...
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    Very comfortable, easy to fit and not too heavy. Fits well into both our cars and doesn't take up too much space so we can fit a reasonable sized adult between 2 car seats on the back seat.
    Comment 4 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Verified Purchase
    I've been really pleased with this so far. It is much more slender than my last child seat. It seems to be solidly built and durable, although I've only had it for a couple of months so time will tell. My son says he's comfortable in it, so happy all around.
    Comment 4 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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    Verified Purchase
    Arrived very fast when ordered 1st class. Excellent comfortable seat and comes WHICH recommended so that's good enough for us!
    Isofix easy to fix and remove to another car if required, a good padded base.
    Obviously more expensive than a large range of booster seats, but well worth the investment in our opinion. Also not as bulky as a lot of the high safety spec ones we've seen.
    Amazon also the cheapest price we could find.
    Buy it!
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