The Baby Jogger City Select 2 Car Seat Adapter allows you to securely attach a compatible Britax infant car seat to your City Select 2 stroller, creating a convenient travel system for everyday outings. Designed for a precise fit, this adapter ensures seamless compatibility between your stroller and Britax infant car seat. Compatible only with certain Britax infant car seat models • Fits Baby Jogger City Select 2 stroller • Only compatible with certain Britax car seats: B-Safe35, B-Safe Ultra, Endeavours, B-Safe Gen2, B-Safe Gen2 FlexFit, B-Safe Gen2 FlexFit+ • These car seat adapters convert your City Select 2 stroller into a travel system with certain Britax infant car seats • No tools required to install • The City Select 2 stroller will fold with the adapters on