Aluminum Beer Keg Christmas Ornament 32316 Old World Christmas Introduced 2018 Includes Free Gift Box (may be plain box) Made of mouth-blown, hand-painted glass. Ornament measures approximately 3 1/2" Folks have loved their beer for millennia, from Thomas Jefferson to Homer Simpson. Plato noted, He was a wise man who invented beer. Originally made of wood, metal kegs increase the safety & shelf life of the elixir within. There is no standard size for a keg, but the US legally defines it as 31 gallons. Cheers!