MiiR Stainless Steel Insulated Growler Bottle, 64-Ounce Every sale can be tracked (MiiR.com/Impact) to a water project giving clean water to one person in need for one year. Track Your Impact code included Double wall vacuum-insulated (doesn't sweat) Keeps cold things cold for 24+ hours, and hot things hot for up to 12 hours 18/8 medical grade stainless steel BPA free