Britax Kidfix III S Car Seat - Cosmos Black

Based on over 50 years of experience and research, the Kidifx III S car seat offers the highest level of safety.


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Special Price £179.00 £209.00
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Delivery Approx 7-10 Working Days
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Based on over 50 years of experience and research, the Kidifx III S car seat offers the highest level of safety. Offers XP pad and secure guard holds the lap belt in the optimal position over the pelvic bones, reducing the risk of abdominal injuries. Plus, the adjustable SICT and V shaped headrest provide protection in the event of a side impact. Thanks to the latest safety features, your child is always perfectly protected from head to hip. So you can be reassured that your little one is safe and sound

Key Features:

  • Suitable from 3.5 years to 12 years approx
  • Weight capacity up to 36kg max
  • Forward facing 15kg - 36kg
  • Fitting isofix and seat belt or seat belt alone


Advanced side impact protection SICT
  • The side impact cushion technology offers superior protection to your child in the event of a side collision. It reduces impact forces by minimising the distance between the car and the car seat and deforms to absorb the energy before it reaches your little one. To benefit from the protection, simply adjust on the side of the car seat closest to the door
Easy adjustable, ergonomic headrest
  • The headrest is designed especially for older children, when using the 3 point seat belt to secure them in the car seat. It can easily be adjusted to the correct position just above your child’s shoulders, With one hand even while they are sitting in the seat. Plus the headrest is ergonomically designed to support your child’s head when they fall asleep
XP pad
  • Despite good planning and careful driving, you can never prepare for a collision. To protect your child's sensitive neck area in case of a frontal impact, Britax has developed a shock absorbing foam pad. It prevents the impact of your child's chin on their chest, absorbing up to 30% of the energy. A jerky forward head movement is reduced and the neck is protected. At the same time it provides additional padding around the edges of the seat belt
Ergonomically optimised seating area
  • To provide maximum comfort, even for taller children, the seating area is approximately 20% larger than similar models. The improved shape and extra soft padding make for a comfortable and ergonomic seating position on longer journeys
Easy adjustable V shaped backrest
  • Designed to give optimum support to your growing child, the V shaped backrest provides more space for their back and shoulders. Plus, the backrest automatically adjusts to match the angle of the vehicle seat, providing a better fit and a comfortable position for your child
Secure guard
  • The secure guard helps to protect your child’s delicate abdominal area by adding an extra 4th contact point to the 3 point seat belt. By keeping the lap belt in an optimal position over your child’s pelvic bones secure guard helps reduce abdominal forces in the event of a frontal collision by up to 35 %, and at the same time allows your child freedom of movement during the journey
Highback booster protection
  • The highback boosters protect your child in 3 ways: (1) The seat shell provides head to hip protection for your child, especially in the event of a side impact, (2) The upper and lower belt guides provide correct positioning of the seat belt, (3) The padded headrest provides safety and comfort for your child’s head and neck
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