A bench seat extends from one side of the interior to the other, in a single piece for the bottom and a single piece for the back. It allows seating in the middle position. Sometimes the seat bottom will be a bench but the back will be split, or vice versa.
Headrests are common, and bench seats sometimes have a large center armrest, or small armrests at one or both ends.
Learn about other types of seats: Bucket, 40/20/40, 60/40 (or 50/50).