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.
Buckets seats with NON-Adjustable headrests. Headrests are built on to seat as a 1 piece backrest.
Bench seat with built on headrests.
This is a 60/40 split bench with built on, Non adjustable headrests and a fold down console/armrest.