Klean Kanteen Vacuum Insulated Growler With Swinglok Cap (Brushed Stainless, 32 oz) Swing Lok Cap is removable, all stainless steel, and threadless for tight seal and leak resistance Large 1.75" (44mm) opening fits ice, easy filling and pouring Shatterproof and won't break like glass Electropolished interior doesn't retain or impart flavors Double-wall vacuum-insulated construction keeps contents cold 30 hours, or iced 80 hours