With our Carseat Adapter, you can easily mount your infant carrier or car seat on your NXT stroller. The adapter fits Maxi-Cosi Coral, Maxi-Cosi CabrioFix, Maxi-Cosi Pebble Plus, BeSafes iZiGO Modular, Cybex Cloud Q, Cybex Aton 4, Avionaut Pixel, Heyner Germany. models. It cannot be used for NXT30 or NXT Challenge. Note that the adapter may only be used with the car seat in an upright position if the baby car seat offers several sitting / lying positions.