Foam. 14.5″ rider & 11″ passenger seat width. If you think the standard Villain doesn’t offer enough support, the Super Villain is your choice. The rider area is a comfy 14 1/2″ wide and your passenger has nothing to complain about either with a generous 11″ wide seating area. Like the regular Villains, this is unlike any other seat currently on the market, certainly not a design for the faint of heart. Apart from the wider passenger and rider seat area, it comes with the same high arching rider seat, that does a great job in battling lower back fatigue. Good for another extra mile in comfort. Both rider and passenger will enjoy LePera’s Marathon foam filling and the stability of this steel based seat.