*Returns not accepted on any opened, used, or defective product. Contact manufacturer customer service directly for defective products/parts. From UPPAbaby, these seat adapters feature: Our VISTA allows for multiple second seat configurations. The Lower Adapter for Maxi-Cosi®, Nuna® and Cybex allows you to attach compatible infant car seats to the secondary position on the VISTA. Simply snap your infant car seat into these adapters and you’re ready to stroll. Compatible with Maxi-Cosi® Mico Max 30, Mico NXT, & Mico AP, Nuna® PIPA™, PIPA lite, & PIPA lite lx, Cybex Aton, Aton 2, Aton Q, Aton M (NOT compatible with Maxi-Cosi Prezi) Color-coded dot indicators to ensure proper installment Stroller folds with the adapters on Imported.