Red & Blue Contigo AUTOSEAL&reg; Stainless Steel Mugs Combo 16-ounce stainless steel travel tumber in black for both cold and hot beverages Patented AUTOSEAL lid automatically seals between sips to ensure no spills Vacuum-insulated technology keeps beverages hot for 4 hours, and cold for 12 hours Contoured body makes this travel mug easy to hold; fits most standard car cupholders Hand washing recommended; lid is dishwasher safe!