A coat-fastener is an item used to secure a coat or other clothing item closed. Common coat-fasteners include toggles, tnuts, rivets, and staples. Toggles are two-piece fasteners that are connected by a loop or bar. Tnuts are small metal nuts with prongs that are inserted into fabric and then bent over to hold the fabric in place. Rivets are cylindrical fasteners with a head on one end that are inserted through two pieces of fabric and then flattened on the other side. Staples are thin metal strips with pointed ends that are inserted through fabric and then bent over to hold the fabric in place.