Vauxhall KTA-2690/7-VX-en Owner's Manual page 57

56 Seats, restraints
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 stick 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.