follis References follis ball Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: ballThe largest, the follis, contained an air-filled bladder, similar to a modern football (soccer ball) or basketball. Read MoreThe largest, the follis, contained an air-filled bladder, similar to a modern football (soccer ball) or basketball. Read More