Chimp 20oz Double Wall Stainless Vacuum Tumbler with Fort Leonard Wood Art. Enjoy your favorite hot or cold beverages from this uniquely designed, double wall vacuum insulated 7″ 20 ounce tumbler. It’s made of stainless steel with copper insulation, and will keep beverages hot or cold for up to six hours. A slider lid makes sipping easy and prevents spillage. Hand wash recommended, and not suitable for microwave use. 7″ H (3-3/8″ Diameter, 2-9/16″ Diameter at base).