The deeply pocketed 16.5" wide driver seat sits you at the ideal cruising angle with extra width in the hips for all-day comfort. The entire width of the 12.5" wide passenger seat utilizes Mustang's unique internal steel support wings. The driver's back is well supported by the nose of the passenger seat that extends forward to create a full 8" backrest, or via the optional built-in driver backrest that fully adjustable and easily removable without tools.