Chicco i-Size Base Simplifying parents lives by providing a i-size base for them to easily fit ISOFIX car seats/carriers. With maximum protection, the double check system is a dual mechanical system, patented by Chicco to fit your car seat properly. 2 ISOFIX connectors allow easy installation of car seats. The support leg provides extra security but can also be folded up behinf the base when not in use to save space. Compatible with Auto-Fix car seats as well as the Oasys i-Size and Kiros i-Size (Trio Best Friend i-Size) Features: Double check safety system for maximum safety 2 ISOFIX connectors Folding support leg