Sticharion
The sticharion is a liturgical vestment that is a long, narrow robe with loose sleeves, fastened at the neck, and often open down the sides but held shut with buttons. There is usually a cross embroidered or appliquéd to the center of the back, between the shoulder blades.
The sticharion is often made from brocade and worn as an outer vestment by acolytes, subdeacons, and deacons. It is also worn as the undermost vestment by bishops and priests; in this case, it is usually made from a simpler, usually white, fabric.