The Maxi-Cosi Rock offers excellent safety performance and complies with the latest i-Size legislation (R129) for car seats. To be used in combination with the FamilyFix. The car seat comes with a comfortable infant insert so that your baby lies safely and more comfortably in the car seat. For extra safety in the event of a side impact, the side wings are equipped with impact-absorbing material at the top. For optimal safety, we recommend using the Rock in combination with the FamilyFix One i-Size base. This is a handy ISOFIX Click & Go system. In May 2018, the Rock was named 'Best Buy' by the Consumers' Association in the category group 0+ i-Size baby car seats. For extra safety in the event of a side impact, the side wings are equipped with impact-absorbing material at the top. For optimal safety, we recommend using the Rock in combination with the FamilyFix One i-Size base. This is a handy ISOFIX Click & Go system. In May 2018, the Rock was named 'Best Buy' by the Consumers' Association in the group 0+ i-Size baby car seat category.