Klean Kanteen Classic Vacuum Insulated Bottle With Loop Cap,32-Ounce,Beet Root Electropolished interior doesnt retain or impart flavors Keeps contents hot 12 hours, or iced 24 hours Large 1.75" (44mm) opening fits ice, easy filling and pouring Portable, reusable, and recyclable 32 oz. Durable, double wall construction