Cybex Aton B i-Size Car Seat + Base M Bundle, Steel Grey

Cybex Brand: Cybex
Product Code: 520003993-516410003
Availability: In Stock
FREE 10-14 Working Day Delivery
£324.90 £279.90

The Cybex Aton B i-Size delivers effective travelling safety for your baby from birth up until 18 months.

An XXL UPF50+ sun canopy supplies shade, and a height-adjustable head-res can be customized to fit your growing child.

Linear Side-impact Protection safeguards in the event of side collisions, and additional safety and stability is provided by the included Base M which is also compatible with the Sirona M2 i-Size (available separately) when baby gets older.

Easy to handle outside the car, it weighs just 3.9kg and can be attached to any CYBEX or gb stroller or other selected brands.

Ready for action from day one, the car seat’s removable newborn inlay lets even the tiniest passengers lie in an ergonomically improved position.

Main Features

  • XXL sun canopy: Shields your child from the elements with a canopy made of UPF50+ protective fabric, provid-ing shade and shelter both inside and outside the car.
  • 11-position height-adjustable headrest: Customize your car seat to fit your growing child - with 11 headrest positions to support their head, neck and shoulder area, and a harness that automatically adjusts along with the headrest.
  • Linear Side-impact Protection System: In the event of a side-impact collision, the L.S.P. System works in concert with the car seat’s energy absorbing shell to reduce forces by approximately 25%.
  • Lightweight: Weighing only 3.9 kilos, the Aton B i-Size can be carried and positioned in the car with a minimum of effort.

Additional Features

  • Travel System: Continue your journey outside the car. With the help of adapters the Aton B i-Size can be attached to any stroller from CYBEX, gb or other selected brands.
  • Removable newborn inlay included: Supports an ergonomically correct position for babies up to 60 cm.

Base M

The Cybex Base M is compatible with the Aton B and Sirona M2 i-Size car seats (Sirona M2 available separately). Due to the individual adjustable ISOFIX connectors as well as the height adjustable load leg, the two car seats gains extra stability and safety on the Base M.

The one-click installation offers a safe and simple installation that requires no further fastening. Installation indicators also help to prevent a possible misuse.

One-click installation

Adjustable ISOFIX connectors attach this CYBEX base to your car. There's no need for further fastening, and the base remains stable and secure for your car seat.

Handy indicators

Simply snap your infant carrier into the ISOFIX base. A green indicator lets you know it's securely fitted, ready for baby's journey.

Support leg

An adjustable support leg improves the stability of your car seat, ensuring little passengers have a smooth ride.


Suitable for Height: 45cm - 87cm

Age Suitability: 0 - 13 kg (approx. 18 months)

Aton Bimensions: L66cm x B 44cm x H 39-56.5cm approx.

Aton B weight: 3.9kg

Dimensions of base: H: 36.5cm x W:38cm x L:66.5cm approx.

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