Features Create a performance travel system on your Ridge stroller (sold separately) Adapters allow for attachment of select models of Maxi-Cosi, Nuna, Cybex, BeSafe, and Joie infant car seats (sold separately) Color-coded indicators to ensure proper instalment Quick, no-tools attachmentSpecifications Compatible with the following (sold separately): Ridge stroller, 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