From Bugaboo, these car seat adapters feature: This adapter allows you to attach select infant car seats to the chassis of Bugaboo Donkey Strollers (Donkey 6, Donkey, Donkey 2, Donkey 3, and Donkey 5, all sold separately) For your donkey in a single or double mode (two children of different age) Securely snaps into place on your Bugaboo Donkey Stroller (sold separately) Compatible with the Nuna Pipa Urbn, Nuna Pipa Lite LX, Nuna Pipa RX, Nuna Pipa Lite, Nuna Pipa, Nuna Pipa Aire, Nuna Pipa Aire RC, Nuna Pipa RX, Bugaboo Turtle Air Shield, Bugaboo Turtle Air. Maxi Cosi Coral XP, Maxi Cosi Mico XP Max, Maxi Cosi Mico 30, Maxi Cosi Mico Luxe+ Imported.