Chevrolet 2008 Optra Owner's Manual page 59

Driver Side shown, Passenger Side similar
If your vehicle has seat-mounted side impact airbags
for the driver and right front passenger, they are in
the side of the seatbacks closest to the door.
CAUTION:
{
If something is between an occupant and an
airbag, the airbag might not inflate properly or it
might force the object into that person causing
severe injury or even death. The path of an
inflating airbag must be kept clear. Do not put
anything between an occupant and an airbag,
and do not attach or put anything on the
steering wheel hub or on or near any other
airbag covering.
Do not use seat accessories that block the
inflation path of a seat-mounted side impact
airbag.
1-55