Thermos 16 Ounce Stainless Steel Travel Tumbler, Gray Plaid THERMOS vacuum insulation technology locks in temperature to preserve flavor and freshness to keep beverages hot for 12 hours or cold for 24 Durable 18/8 stainless steel interior and exterior withstand the demands of everyday use Drink lid opens with push button ease and locks closed for carefree travel Bottle stays cool to the touch with hot liquids and is condensation-free with cold 16 ounce capacity