From Nuna, this car seat adapter features: Attach any Nuna PIPA series infant car seat to the UPPAbaby® Vista and Cruz (2015 and later UPPAbaby® Vista/Vista V2/Vista V3 and Cruz/Cruz V2/Cruz V3 Strollers) stroller using this adapter With this ring adapter, the car seat clicks into the stroller instantly and can be removed with only one hand Cleverly connects to stroller with just a click Creates a safe and sturdy connection for superb strolling Release buttons makes switching the PIPA between stroller and car Imported.