Contigo Autoseal Thermal Mugs 2 Pack (Blue/Green - 16 Oz x 2) Automatically seals between sips 2 16-ounce stainless steel travel Thermos for both cold and hot beverages Vacuum-insulated technology keeps beverages hot for 4 hours, and cold for 12 hours Rubberized Bottom uniform body makes this travel mug easy to hold. Fits most standard car cup holders, Hand washing recommended; lid is top Rack "dishwasher safe"