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Cybex Aton M i-Size Car Seat

  • i-Size tested to highest safety standards
  • Side Impact Technology for additional safety
  • Can be installed on a base for further convenience
NOW £128.99 £122.85
(Incl. VAT) (Excl. VAT)
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Product Details

Offering the latest safety technology as well as modular innovation, the Cybex Aton M i-Size Infant Car Seat complies with the latest EU standard regulation for infant travel, the R129 "i-Size". This high safety standard is perfect to give your little one the most stress-free journey from birth up to 15 months. 

  • i-Size tested to highest safety standards
  • Longer rear facing for additional safety
  • Side Impact Technology for additional safety
  • Height adjustable headrest grows with your child
  • Can be installed on a base for further convenience

All about me

With stunning good looks as standard, the Aton M i-Size offers a removable seat insert that ensures a near-flat lying position which is superb for premature and newborn babies and because the head and shoulder protectors are height adjustable to 11-positions allowing the infant carrier to grow with your child and afford them extra space, this superb seat lets your little one stay in the safest position to travel-rear facing- up to 15 months. That's an extremely long usability for a seat of this type!

For superb safety, the Aton M i-Size uses the Linear Side Impact Protection system (LSP) which absorbs the forces of a side-impact collision in a linear series of reactions through the use of the shoulder and head protectors. Whilst that happens, the kinetic energy of the body caused by the impact is absorbed at a very early stage of impact and the head is actively led into a safe position. Now that's super safe! To keep your little one comfortable as well as safe, a softly padded, extra-wide Y-shaped harness with a soft belt and crotch pads, and an XXL sun canopy which offers UPF50+ protection against harmful sun's rays are also integrated into the solid seat shell. The covers are removable and machine washable at 30°c for your convenience.

There is the option of having Cybex's Sensor Safe clip with the Aton M i-Size. This little piece of technology offers peace of mind for you and enhanced safety for your little one. The clip is attached to the harness system of the car seat and then connects to an app on your smartphone. The app then alerts you if your child unbuckles the clip, whether the ambient temperature of your child is too hot or too cold, if your little one has been in their car seat for too long and if you have left your little one unattended in the car.  There is also lots more on the app, like installation guidance, how-to's, FAQ's and more.

This lightweight seat is suitable for use in the modular M-Line system, meaning you can use it with the Cybex Base M system for true i-Size safety. The Base M can also be used with the follow-on seat, the Sirona M2 i-Size so you only need one base for both seats! The Sirona M2 i-Size and the Base M are both sold separately. The Aton M i-Size is also compatible with the Cybex & GB buggies and strollers as well as a number of other popular brands so you can use it as part of a travel system.

Please note, the seat is ONLY i-Size when being used with the Cybex Base M (sold separately). It can be fitted using your vehicles 3-point seatbelt, but in this mode, it is only compliant to the safety standards set down in the R44/04 regulations so it is recommended that it is used with the Base M for maximum safety.

Suitable from Birth to 13kg (Approximately 15 Months)
Rearward facing
R129 "i-Size" Compliant
Belted installation or ISOFIX (base required, sold separately)

PLEASE NOTE: Image is for illustration purposes only.


Height 39-56.5cm
Width 44cm
Length 66cm
Weight 4.2kg
MPN519001803, 519001799, 519001797, 519001795, 519001801, 519001793, 519000895, 518000073, 518000085, 519000893, 518000083, 519000891, 518000081, 519000889, 518000079, 519000885, 519000887, 518000075, 518000077

Customer Reviews

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Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £39.99 from £0.59 2-3 working days from day of despatch
Standard Delivery for orders over £39.99 Free
Express Delivery from £0.83 Order before 4.30pm Monday to Friday for next working day delivery
Special Delivery from £11.94
Click & Collect from £5.94 Collect your parcel from a local post office. 2 - 3 working days from day of despatch

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.