These handy adaptors from abc design add to the already impressive list of features that the cobra plus an mamba plus possess these adaptors allow maxi cosi and cybex car seats to be used on the cobra plus and mamba plus chassis the adaptors simply attach to the sides of the car seat and allow simple and secure attachment to the chassis features compatible with the maxi cosi citi cabrio pebble the cybex aton car seats suitable for use with the abc design cobra plus mamba plus pushcha