Because barrels were more robust than clay vessels and easier to move than crates, they stimulated the trade in all manner of commodities throughout the centuries.
Kuna vaadid olid vastupidavamad kui savinõud ning hõlpsamini transporditavad kui kastid, hoogustas nende kasutuselevõtt sajandite jooksul igat masti tarbekraamiga kauplemist.