Maxi-Cosi Infant Car Seat Rock design: Nomad Blue 2018 The infant car seat Rock which conforms to the latest safety standards is Maxi-Cosi s second i-Size infant car seat on the market. The i-Size norm is maintained with only one click. Thanks to Isofix, this is the safest, fasted and easiest way to attach the Maxi-Cosi Rock to your car. Alternatively, the infant car seat Rock can be fastened with your car s own seat belt and then conforms to the norm ECE R44/ 04.This comfortable infant car seat comes with a cosy seat insert which is perfect for the first weeks and months of your little one. It embraces your child and provides both a superior lying position and additional protection.