The Papal Cope was formerly a very long garment, trailing upon the ground. It was called the mantum. The mantum of John XXIII was worn at the Solemn Opening of the Second Vatican Council in 1962. It was also used during the early years of the reign of Pope Paul VI.
The cope is made of white silk interwoven with threads of spun gold. It is also embroidered with gold bullion. The photographs clearly shew the coat of arms of John XXIII. It appears that the mantum of John XXIII has been shortened to fit Pope Benedict.