The penannular brooch is a type of brooch clothes fastener. Penannular means formed as an incomplete ring. They are especially associated with the beginning of the Early Medieval period in the British Isles. Beginning as utilitarian fasteners in the Iron Age and Roman period, they are especially associated with the highly ornate brooches produced in precious metal for the elites of Ireland and Scotland from about 700 to 900, which are popularly known as Celtic brooches or similar terms.
Hand forged in brass.
These brooches can be used to fasten cloaks, they turn a blanket into a cloak.
They can also be used for skirts, capes, and anything else you want fastened.