Amazon.com: Stokke Stroller Multi Car Seat Adapter, Black - Compatible with Select Maxi COSI, Nuna, Cybex & Clek Car Seats - for Stokke Trailz Terrain, Xplory 6 & Xplory X Strollers -
Cybex Carry Cot & Car Seat Adapter for Agis, Eternis, Iris & Balios Strollers