Car Seats

Koos iSize Car Seat  £190.00

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KOOS iSize

The new iSize car seat with dual installation: isofix or seat belt

  • Koos iSize by JanéiSize infant car seat
  • iSize from 40 to 83cm, 0-13 Kg, birth to 15 months approx.
  • Complete with new 40-60 cm cushion insert, for newborns.
  • Install with 3 point seat belt, or the optional iPlatform Isofix base in the car.
  • iSize (R129) Approved.

The new KOOS iSIZE by Jané is the latest i-SIZE safety seat designed to protect your baby in the car. Suitable for children of up to 13 kg, and with a height of between 40 and 83cm which is from birth to 15 months approximately.

iSize infant car safety seat

This is an enhanced “i-SIZE” child restraint system. It has been approved under Regulation ECE R129/00 for use on “i-SIZE compatible” vehicle seats when used with the iPlatform base.

The KOOS iSIZE child car seat can also be installed with ISOFIX (category D as indicated in the vehicle instruction manual) or with the car seat belt, universal classification. Depending on your car and personal needs, you can choose the best installation method that suits your situation.

As the Koos iSize is also fitted with the PROFIX system, it means that it can be installed into the car or fitted onto the Jané chassis to make a travel system with just one easy click-and-go movement.



Jane Koos iSize profix


Maximum convenience with a single click

Like the rest of the Jané range, the Jané KOOS iSIZE infant car seat is fitted with the PROFIX system (patented). This means it can be connected quickly and safely with just one movement onto the ISOFIX base in the car or onto the pushchair chassis. With Jané everything is integrated into the system, so with the simple press of a button your travel system can be transformed.



Jané Koos Awards





isize Isofix to optimise babys safety

Install with Seat Belt
Koos iSize can be installed using the vehicle seat belt or

Simultaneous harness and headrest system

iPlatform Isofix Base
Koos iSize can also be installed using the iPlatform isofix base.

Increase head protection

Highest Safety
Greatly improved safety performance and protection for baby's head and neck with new high impact-absorbing material and head protector.

Simultaneous harness and headrest system

Simultaneous Adjustments
Simultaneous safety harness and headrest adjustment. Complete with 40-60 cm cushion insert, for newborns.

Side impact protection

Side Impact Protection
Built-in side impact protection for greater safety.




Koos iSize Infant Car Seat
Koos iSize Technical Characteristics

  1. Koos iSize is compatible with the European Regulation R44 and the new R129 (iSize). It can be installed with car seatbelts (ECE R44/04). Suitable for infants from birth to 15 months approx. Group 0+ 0-13kg, or children with a height of between 40-83 cm.
  2. Optional isofix base available: iPlatform, this is the quickest and safest installation system, as it prevents any installation errors that could affect safety.
  3. Dual installation: isofix or seat belt.
  4. The PROFIX connection system makes it compatible with the new iPlatform ISOFIX base and all Jané pushchairs.
  5. Side impact protectors that are specially designed to absorb side impacts along with the adjustable headrest. Fitted with "memory foam" for maximum dissipation of loads in the event of a side impact.
  6. Multifunctional button for easy carrying handle adjustment and travel system chassis release.
  7. Adjustable headrest to 5 positions. The headrest adjusts to suit the baby's height, and can be adjusted while your baby is still in the seat.
  8. Straps adjust and adapt automatically when you adjust the headrest to your baby's height.
  9. 3-Point safety harness with one-pull adjustment.
  10. Removable and washable upholstery.
  11. Correct installation indicators.
  12. Complete with adjustable hood to protect baby from the sun and wind and creates a cosy environment for rest and sleep.
  13. And finally, iSize means more peace of mind. Not all current child car seats fit all car models securely. However, all iSize car seats do fit all cars equipped with the ISOFIX system. 
  14. New 40-60 cm cushion insert, for newborns, which improves the resting angle and increases safety in the event of side impact. 
  15. Dimensions: 66 x 44 x 58 cm
  16. Weight: 3 kg



Attaches to any Jané PROFIX Compatible Pushchair or Chassis to make a travel system:

Current models:
Kendo, Muum, Minnum, Epic, Crosswalk, Rider, Trider, Powertwin Pro

Older models:
Slalom Pro, Slalom R, Unlimit, Cross, Solo Pro, Solo R, Twone, Nanqu XL

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