A basic set is the main portions of the seats, bottom and tops. For example:
There are exceptions to these statements but they are noted in the descriptions of each seat cover.
Straight bench seat.
Solid Bench bottom, 50/50 split backrest seat.
Bench seat with small built in shoulder extensions with a fold out armrest.
Buckets seats with NON-Adjustable headrests. 1 armrest exists on each seat. No center seating exists.