Create a performance travel system on your RIDGE stroller. Adapters allow for attachment of select models of Maxi-Cosi®, Nuna®, Cybex, BeSafe®, and Joie™ infant car seats. Compatible with the following Car Seat Models : US: Maxi-Cosi® Mico Max 30, Mico NXT, Mico AP, Mico Max Plus Nuna® PIPA™, PIPA™ lite, PIPA™ lite lx, PIPA™ lite r, PIPA ™ rx Cybex Aton, Aton 2, Aton Q, Aton M BeSafe® not applicable in US/CA