Long day or short night? Make sure you have plenty of your favorite java. This black-and-silver tumbler is made of stainless steel with copper-lined insulation. The double-wall, vacuum-insulated design keeps drinks hot for eight hours and cold for 16. Acrylic lid. Top rack dishwasher-safe. Not for use in microwave. Holds 30 ounces. Laser-engraved logo.