4"L x 5"W x 9"H; Converts an UPPAbaby Vista Stroller (sold separately) into a convenient travel system for a toddler and infant; Fits the lower frame bracket (secondary position) of Vista 2015-later models only; Compatible with Maxi-Cosi® Mico AP, Maxi-Cosi® Mico Max 30, Maxi-Cosi® Mico Nxt, Maxi-Cosi® Cabrio Fix, Nuna® Pipa, Cybex® Aton, Cybex® Aton 2 and Cybex® Aton Q; Not compatible with Maxi-Cosi® Prezi; Color-coded dot indicators ensure proper installment; Stroller folds with the car seat adaptor attached, so you can fold, load, and go; Manufacturer's limited 2-year warranty; Get help finding the right stroller with the Bloomingdale's Stroller Guide; Imported