Circular-shaped bas-relief medal. On front: profile of Pope Pius XI encircled by the words "CHICAGO CMXXVI PIUS XI". On back: a chalice surmounted by a host is depicted among rays of light. A cross and the letters "IHS" are inscribed on the host. The words "UBI PETRUS IBI ECCLESIA - INTERNATIOANAL EUCHARIST CONGRESS" encircle the whole.