Baby Jogger City Mini 2 Double Car Seat Adapter For Maxi Cosi / Be Safe / Cybex Black - The Baby Jogger Maxi Cosi, Be Safe, Cybex Car Seat Adapter is the easiest way to use your stroller from birth. Simply remove the canopy to attach Maxi Cosi, Be Safe, Cybex infant car seats to a City Mini 2 Double or City Mini GT2 Double stroller.