Replacement Head and Body Insert Pads for Chicco Keyfit or Keyfit 30 Infant Car Seat. Make your car seat look nice and clean with the inserts for the new baby. These inserts are compatible with all Keyfit model car seats including the Keyfit Magic Car Seat. However, the head and body inserts are a complete set and cannot be interchanged with other models. For example, the Magic Insert Head Support cannot be used with this Body Support. This set is for the CUBES fashion / color.