Odyssey principle pivotal seat aaron ross the odyssey principal aaron ross pivotal seat is one of two principal designs odyssey worked with gary young and aaron ross to come up with one custom foam shape and wrapped them with specific materials of their design aarons model features a thick padded seat with pivotal base and aarons keyboard graphic embossing on a vinyl cover odyssey bmx saddle features fitment pivotal weight 160grams style slim no padded cover material synthetic buy