Baby Jogger RAPIDLOCK Infant Car Seat Base with belt-tensioning technology provides an easy and safe car seat installation for babys next adventure. Its the most convenient way to use your infant car seat in multiple vehicles and is compatible with Baby Jogger City GO, City GO 2 and City GO Air infant car seats.* This base also features an integrated SecureStop Anti-Rebound Bar for an added layer of safety for baby. With 4 different recline positions, this base can fit securely into any vehicle. Utilize the dual bubble level indicators to ensure a properly level installation while installing the base in seconds using either the vehicle belt or push-button LATCH. New TRUE Test Plus enhanced safety standards provide additional peace of mind that baby will be protected. *Manufactured after 2015