These half gallon stainless steel growlers are double walled and vacuum insulated, so they keep hot liquids hot for hours and cold drinks cold all day long. Their secure lids help maintain carbonation all day. They're made of recyclable, non-leaching stainless steel that won’t retain the tastes or odors of their contents. And even better, the double-wall technology prevents condensation on the outside. Features a handy 3-finger grip lid for easy carrying— but any FiftyFifty lid fits this growler, so you can interchange them as you wish.