Baby Jogger Car Seat Adapter is the adapter to fix your Britax / BOBcar seat to your Baby Jogger City Mini/City Mini GT stroller.Customize your own travel system! Includes support bar Works with BOB B-Safe and Britax B-Safe, B-Safe 35, B-Safe 35 Elite infant car seats only Only compatible with: Baby Jogger City Mini Single Stroller Baby Jogger City Mini GT Single Stroller Baby Jogger Summit X3 Single Stroller This item is non-returnable. More information: Create your own Baby Jogger City Mini, City Mini GT, or Summit X3 travel system by securely attaching your infant car seat to the stroller Attaches directly to the stroller with additional support bars No tools required for this simple, easy installation process Easy installation Secure attachment Convenient to use This item is specific to City Mini 3-wheel, City Mini GT, Summit X3 strollers, which have a mounting bracket design.