Chlamys

[2] By the time of the Byzantine Empire it was, although in a much larger form, part of the state costume of the emperor and high officials.

Originally it was wrapped around the waist like a loincloth, but by the end of the 5th century BC it was worn over the elbows.

As such, the chlamys is the characteristic garment of Hermes (Roman Mercury), the messenger god usually depicted as a young man.

The chlamys continued into the Byzantine period, when it was often much larger and usually worn sideways, at least by emperors, and likely made of silk.

tablion), beginning about level with the armpit and reaching down to about the waist; typically only the one on the wearer's left is seen in portraits.