 The Aër normally has a cross embroidered in its exact center, so that when it is folded the cross is visible.At the Great Entrance, when the sacred vessels are brought in procession to the Holy Table (altar), the priest will place the Aër over the deacon's left shoulder  before he hands him the Diskos (the priest himself will carry the Chalice).For this reason, the Aër will often have ribbons sewn onto it, so it can be tied securely in place.