Cybex Sirona S i-size Baby Car Seat with SensorSafe



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includes Accessories + Fitting

Item: 227462

Cybex Sirona S i-size Baby Car Seat with SensorSafe

Cybex Sirona S i-size Baby Car Seat with SensorSafe is rated 4.5 out of 5 by 2.
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£ From 349.95 a month
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Car Seat Fitting
  • Description
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  • Reviews
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  • Cybex Sirona S i-size Baby Car Seat with SensorSafe

    • With SensorSafe: A unique smart chest clip that enhances the safety of your child in the car.
    • Innovative 360° rotating mechanism.
    • Rear-facing car seat: Reduces the risk of injury in a head-on collision by more than 80% when compared to a forward-facing system car seat. Tests show that the force of an impact during a front crash is distributed evenly over a large area. CYBEX recommends rear-facing travel for children up to 4 years.
    • Driving Direction Control (DDC): Prevents misuse of the forward-facing position of the car seat. It ensures the forward- facing position is not used before the child is at least 16 months old and 76 cm tall.

    The Cybex Sirona S i-Size with SensorSafe offers an innovative one-hand 360° rotating mechanism allowing for a comfortable entry and exit position, ensuring less strain on parents’ backs. Because it’s the safest way for your little one to travel, the Sirona S i-Size provides comfortable rear-facing travel for children up to 105 cm, approx. 4 years.

    The Driving Direction Control (DDC) prevents forward-facing use before the child is at least 16 months old and 76 cm tall. Sirona S i-Size also offers increased safety for your child in the forward-facing position thanks to the Energy Reduction Technology. Attached to the harness system of your car seat, the SensorSafe clip connects to your smartphone preventing children from overheating, escaping from the seat and being left alone in the car.

    Cybex Sirona S i-size with SensorSafe Additional Features

    • Energy Reduction Technology (ER-Tech): Offers increased safety for your child in the forward-facing position in the event of a head-on collision. It reduces the forces on the neck of a child during a front crash by approximately 20%, compared to other existing harness systems.
    • Integrated L.S.P. System: Offers increased safety in the event of a side-impact collision. It reduces the force of a side-impact in combination with the energy-absorbing shell by approximately 25%.
    • 12 position height-adjustable headrest.
    • One-hand recline and rotation function.
    • Central 5-point harness system.
    • Energy-absorbing shell.
    • Rebound bar: Increased protection in the event of a rear collision.
    • Belt holder: Makes taking your child out of the seat easy.
    • Newborn inlay included.

    What is a SensorSafe Chest Clip?

    A unique smart chest clip and monitoring system that ensures the safety and health of your child is always your first priority.
    • HARNESS SYSTEM CONTROL – Keeps your child securely fastened at all times.
    • CHILD ALONE WARNING – Ensures your child is always with a parent or loved one.
    • TEMPERATURE – Ensures your child always travels at a safe temperature.
    • TAKE A BREAK ALERT – Ensures your child doesn’t sit in the car for too long.
    • INSTALLATION CHECKLIST – Maximises the safety of your child and ensures correct installation for the parent.

    Size Guide

    Car Seats Baby Toddler Child
    Weight (kg) 0 - 19kg 9 - 36kg 15 - 36kg
    Weight (lbs) 0 - 42 20 - 80 33 - 80
    Height (cm) 40 - 105 70 - 135 100 - 135
    Height (Inch) 1' 4" - 3' 6" 2' 4"- 4' 5" 3' 4" - 4' 5"
    Age 0 months - 4 years 9 months - 12 years 4 - 12 years
  • Age: Baby
    Age Band: 0-4 years
    Group: Group 0+/1
    Isofix Compatible: Yes
    Adjustable Headrest: 12 Position Adjustable
    Depth of Seat: 70cm
    Direction: Rearward and Forward
    Height Of Seat: 63.5cm
    I-size: Yes
    Recline Positions: 5 Forwards, 3 Rearwards
    Removable Covers: Yes
    Restraint Method: 5-Point Harness with ER Tech
    Rotating Seat: Yes
    Side Impact Protection: Linear Side Impact Protection
    Weight of Seat: 15kg
    Width of Seat: 43cm
  • FREE Click & Collect

    FREE Click & Collect - you can reserve an item online and pick it up from a store of your choice

    Simply enter your postcode on the product page to check availability, and select Click & Collect at checkout. What's more, you pay for your items on collection. Click here to learn more.

    Items in stock - collect from 1 hour
    If your item is in stock at your chosen store, you can collect it from one hour after ordering online. We'll hold your item in-store for seven days.

    Items not in stock - collect next day*
    If your item isn't in stock, we can order it to your chosen store for collection.


    FREE Delivery

    Free Delivery available on orders over £40 placed by 8pm*

    Your delivery date will be communicated at checkout and on your confirmation email. For further information click here.

    *Halfords and Halfords couriers deliver Monday to Saturday excluding bank holidays.


  • You can buy this product from one of our carefully selected Approved Partners. The full list of options available are below. Simply add your chosen option to your basket and proceed to checkout when you're ready.

    You can purchase products supplied by Halfords and selected other suppliers on

    Checkout is always via and all payment will be taken via In checkout the products will be split into separate deliveries for each supplier.

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    Price Seller Info Purchase

Some of the parts we sell here at Halfords have been reconditioned. These will carry a Refundable Deposit or an extra surcharge amount. When you add one of these reconditioned items to your basket, we'll add this extra cost automatically.

Once you've sent us your old item we'll check it over, and then refund you the full surcharge as long as everything is ok.

Before you return your old unit please make sure it's in re-serviceable condition. So if you're returning caliper casings, you'll need to double check they aren't badly damaged or broken. If the part you've sent is found to be unserviceable, we reserve the right not to refund the surcharge.

Please note that if you're returning your old unit to our National Returns Centre then this will be at your own expense.

Cybex Toddler Car Seats

Cybex Sirona S i-size Baby Car Seat with SensorSafe

£349.95 Cybex Sirona S i-size with SensorSafe