Joovy Caboose Ultralight Sit and Stand Double Stroller with Rear Bench and Standing Platform, 3-Way Reclining Seats, Optional Rear Seat, and Universal Car Seat Adapter (Turq) - Walmart.com
Z4 Duo Stroller + 2 Car Seats + Double Adaptors + PV Links – Agio Baby
Amazon.com: Valco Baby Neo Twin/DuoX Adapter for Car Seat 'G' (Click Connect) : Baby