Maxi-Cosi Rock i-Size Car Seat

Meet Maxi-Cosi’s first i-Size compliant baby car seat: the Rock! It has a unique baby-hugg inlay to give your newborn baby a comfy fit. Its easy-to-use Click & Go installation makes it easy for you as a parent to secure the seat in your car!



£99.00 £99.00
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Maxi-Cosi Rock i-Size Car Seat

Meet Maxi-Cosi’s first i-Size compliant baby car seat: the Rock! It has a unique baby-hugg inlay to give your newborn baby a comfy fit. Its easy-to-use Click & Go installation makes it easy for you as a parent to secure the seat in your car!


Maybe your baby sometimes goes for a ride with his or her grandparents, or with your in-laws. Regardless of how many different cars your little one goes for a ride in, the Maxi-Cosi Rock always fits. The baby car seat can be attached to your car seat’s safety belt or to your car’s ISOFIX anchorage points. The installation is clearly explained in the user manual, guiding you step by step for a secure fit.

For installation using ISOFIX, you will need an ISOFIX base. Attach the base to your car’s ISOFIX connectors and leave it installed in the car. This way, the Rock car seat is snapped onto the base with a simple "click”, every time you need to get in the car. Visual indicators on the base notify you when your Maxi-Cosi car seat is correctly installed and you are ready to "go”.

Rock can be installed in combination with the FamilyFix One i-Size base. 


At Maxi-Cosi they have carried over 50 million babies home from the hospital. External crash test centres, such as the German automobile organisation ADAC (Allgemeiner Deutscher Automobil-Club), regularly test the Maxi-Cosi car seats on dynamic safety and ease of use.

When the ADAC tested the Maxi-Cosi Rock with the FamilyFix One i-Size, they got high scores for safety. The comfortable Rock car seat is equipped with a Side Protection System, meaning that in the event of a hard side impact, Maxi-Cosi Rock’s SPS (Side Protection System) reduces the risk of your baby getting injured.

Additionally, they have also improved the Rock’s impact-absorbing material, making the baby car seat compliant with the latest European i-Size safety standard for car seats. It gives your baby maximum safety.

The Rock also has a good rating on convenience of use, thanks to its easy-to-use Click & Go installation with an ISOFIX base. To reduce the risk of installing it the wrong way, at Maxi-Cosi, they always recommend to install the Rock car seat with the FamilyFix One i-Size base. Most first-time parents install baby car seats correctly, thanks to its easy Click & Go installation. 

A safe place for your baby

Because Maxi-Cosi care about giving parents the safest car seat, they designed the Rock to comply with the latest i-Size car seat regulation. By adding improved impact-absorbing material to the top side of each wing, the Rock is an i-Size car seat, which means it’s a super safe place for your baby in the car.

Not only is this baby car seat safe, it is comfortable for your baby and convenient for you as a parent. The seat has extra padding, and it includes a comfortable baby-hug inlay. This inlay is designed for your newborn baby’s perfect fit, and for enhanced comfort and safety.

The Click & Go installation — in combination with the ISOFIX base – allows you to attach the Rock to the base with a simple "click”. To avoid installing it the wrong way, the base notifies you when it has been properly attached. You can continue using the Maxi-Cosi base with a toddler car seat for longer rear-facing travel, which experts recommend for up to 4 years. That’s because it gives your little one’s head and neck better protection. Since you are able to use the ISOFIX base for up to 4 years, you get the best value!

Removable cover

Since the Rock will get dirty after daily use, Maxi-Cosi’s car seat cover can easily be removed. It is machine washable for easy cleaning, no matter what happens.

Travel system

Going for a relaxing stroll in the park, a short visit to see your parents, or a quick stop at the supermarket? Use the i-Size car seat together with a stroller by clicking the Rock onto it.

Create a complete and practical travel system, by combining this car seat with a Maxi-Cosi stroller. They make the perfect match!

Maxi-Cosi Rock is approved for use in the airplane (TUV certification), and you can take it along with you on holiday.


  • Use the car’s seat belt to install the Rock baby car seat
  • Use the car’s ISOFIX connectors to install the Rock in combination with an ISOFIX base unit
  • Cover can be removed, without taking off the harness
  • Cover can be washed in the washing machine
  • Rock is approved for use in an airplane (TUV certification)
  • Comfortable seat for baby, with extra padding
  • Additional baby-hugg inlay for newborn baby provides a better fit for more comfort and safety
  • Integrated sun canopy for sun protection
  • Side Protection System to protect baby in case of harmful side impacts
  • Improved impact-absorbing material in top side of wings offers i-Size safety
  • 3-point safety harness for a safe and secure fit
  • If used with a FamilyFix One i-Size base, the base is reusable in combination with toddler car seat Pearl Smart i-Size and Pearl Pro i-Size

Customer reviews

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Fast UK Delivery

We aim to provide fast and efficient delivery on most packages to mainland UK addresses, there are some areas where we will need to charge slightly extra due to postage costs such as Highlands & Islands, Southern Ireland & Isle of Man.

Delivery is charged at a flat rate of £5.95 for all orders below £50, and free for all orders of £50 and above.