In Austria, the term used in the Weinviertel region (dialectal Köllakörbl, Köllazega, Köllazäga, Kellerzeger - Zeger or Zäger = small bag, pouch) refers to a sealable tubular container, usually made of leather or straw. Wine bottles were transported with it (mostly so called Doppler = two-liter bottle). Another possibility of transport was as a bag on the inside of the winegrower's jancker (jacket). See also under customs in viticulture.
Source: Glossary of cellar lanes