klobuk

thumb|St. Theophan the Recluse wearing a klobuk. thumb|A Byzantine Rite|Byzantine Catholic Metropolitan wearing a white klobuk thumb|Klobuk of Patriarch Philaret of Moscow (1619-33), Kremlin museum

A klobuk is an item of monastic clothing worn by monks and, in the Russian tradition, also by nuns, in the Byzantine Rite, composed of a kalimavka (stiffened round black headcovering) with an epanokalimavkion, a veil which completely covers the kalimavka and hangs down over the shoulders and back.