Geo 1995 Prizm Owner's Manual page 36

Center Passenger Position
U
Lap Belt
If your vehicle has a rear bench seat, someone can sit in
the center position.
When you sit in the center seating position, you have a
lap safety belt, which has no retractor. To make the belt
longer, tilt the latch plate and pull it along the belt.
To make the belt shorter, pull its free end as shown until
the belt is snug.
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