Introducing your new favorite cup. The 12oz. TruEnamel™ brings first-of-its-kind innovation with a familiar feeling. The pure fired-glass enamel features a polished drinking surface, making that first morning sip even smoother. Add in vacuum-insulated stainless steel for that cozy (or cool) feeling you can take with you anywhere. Not to mention it sits pretty on the shelf. The Thermo 3D® Double wall vacuum-insulation keeps hot drinks hot and cold drinks cold.