This optional infant car seat adapter bar can accept one Clek, Maxi Cosi, Cybex, or Nuna infant car seat to be used on the 2016-2022 Indie Twin double stroller. Compatible with: Clek Liing, Clek Liingo, Nuna Pipa Lite RX, Nuna Pipa Lite R, Nuna Pipa Lite LX, Nuna Pipa Lite, Maxi Cosi Mico Max Plus, Maxi Cosi Mico 30, Maxi Cosi Mico Max 30, Maxi Cosi Mico AP, Maxi Cosi Mico, Cybex Aton Q, Cybex Aton 2 and Cybex Aton infant car seats. This car seat adapter has been tested with the listed car seat models manufactured from 2016 and later. This adapter is not compatible with 2015 or prior models due to frame re-design. Seat fabric removal is not required for use, just an option.