This is a car seat adapter for attaching a Cybex baby seat to a Cybex stroller. It is compatible with the Cybex "Melio" series or "Mios" series strollers. This is a dedicated accessory for docking Cybex "Aton" series or "Cloud" series baby seats to the stroller. By using this adapter, the stroller can be used as a travel system for newborns. ↑ This is an AI-generated description. It has never been used and has been stored in a warehouse. Actually, I didn't quite understand how to use it, so I included the AI description, but when purchasing, I recommend that you check whether it is compatible with your stroller, etc.