Your seat
Ordinary seats typically come in rows of 3x2 seats, although on some trains they are arranged in rows of 2x2 seats (and in rare cases in rows of 3x3 seats). Seats can be reclined and have tables, pockets for magazines and open overhead shelves. They provide considerably more foot space than economy seats on airplanes. Some newer train sets have electrical outlets installed along the walls.
Green cars always come with rows of 2x2 seats and have seats that are more spacious than ordinary seats. The seats are often equipped with a foot rest, reading light, electrical outlets (for aisle and window seats) and a seat warmer, although the exact facilities depend on the train set.
All seats on shinkansen trains can be turned by 180 degrees, allowing travelers to always face forward. The seats are turned by the staff at the terminal stations, but can also be turned by passengers, for example, to create a group of four or six seats facing each other.