Pushchair Adapter, Black
From Amazon
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 - Easy-to-Clean Plastic
Lesters Nurseryworld
Stokke® Stroller Car Seat Adaptors