Opel ZAFIRA TOURER Owner's Manual page 63

When the child restraint system is not
in use, secure the seat with a seat belt
or remove it from the vehicle.
Note
Do not affix anything on the child
restraint systems and do not cover
them with any other materials.
A child restraint system which has
been subjected to stress in an
accident must be replaced.
Seats, restraints 61