Cybex Base S

Pre-order update: The Base S is the heart of the new S-Line, and Cybex expects the first deliveries to reach us from mid-November 2026. Pre-ordering secures yours from the first shipment, so it's ready for your Cloud S, Sirona S or Anoris S. Dates are Cybex's latest estimates and may change, and we'll keep you updated until your order is on its way.

The CYBEX Base S is the ISOFIX base at the heart of the new CYBEX S-Line modular system. One base supports three car seats – the Cloud S, Sirona S and Anoris S – taking your child all the way from birth to around 7 years. A quick, secure click-in installation, easy side entry and an onboard safety assistant make everyday use simple and reassuring.

Why the Base S is the only base you'll need

• Freedom of choice – one base, two directions – start with the Cloud S, then choose the rear-facing Sirona S or the forward-facing Anoris S Airbag, all on the same Base S, from birth to approx. 7 years.
• One-hand rotation – 180° for the Cloud S and Anoris S Airbag, 360° for the Sirona S, so you can turn the seat to the door and avoid awkward lifting.
• LED safety indicators – an onboard safety assistant shows the status of the ISOFIX, load leg, impact shield and battery, so you can check your child is secure at a glance.
• Made to last – durable materials and smart engineering built to see you through multiple children and years of daily use.
• Easy ISOFIX installation – ISOFIX anchors and a height-adjustable load leg give a rigid, stable fit, with colour-coded release buttons and clear indicators for quick, reliable setup.

Approved to UN R129/04. Compatible with the Cloud S, Sirona S and Anoris S Airbag, from birth to approx. 7 years.