The Maxi-Cosi Car Seat Adapter is the easiest way to turn your stroller into a customized travel system. Attaching your car seat to a City Mini® 2, City Mini® GT2 or City Elite® 2 has never been easier. You can even fold the stroller with the adapter attached, giving you the most versatile travel system available. Compatible only with Maxi-Cosi, BeSafe and Kiddy seat models.