No, you do not need to order a separate base.
The Maxi-Cosi Mica 360 Pro has an integrated ISOFIX base that is built into the seat.
This means:
The base is included automatically when you rent the seat
You do not need to select or add any extra accessories
The seat is ready to use right away with simple ISOFIX installation
In short:
👉 Just choose the seat itself — the base is always included.