Contigo TWISTSEAL Glaze Vacuum-Insulated Stainless Steel Travel Mug with Ceramic Coating 16 oz Silver & black For great tasting on-the-go coffee, this travel mug has a ceramic lining on the inside of the stainless steal outer shell. Leak-proof lid and thermalock vacuum insulation keeps your coffee hot for up to 7 hours. Features: Traditional ceramic material on the inside protects flavor Leak-proof lid when closed for on-the-go convenience Drinks stay hot up to 7 hours or cold up to 18 thanks to THERMALOCK vacuum insulation CleanGuard lid shields spout from dirt and germs Easy-clean lid completely opens for an extra-squeaky clean Fits most cup holders and under most single-serve brewers Top-rack dishwasher-safe lid; hand-wash-only stainless steel body 2.75” diameter 8.25” tall