With a ceramic lining on the inside, the Contigo TWISTSEAL Glaze Vacuum-Insulated Stainless Steel Travel Mug with Ceramic Coating, 16 oz., ensures that coffee connoisseurs (as well as new enthusiasts) can enjoy their coffee ritual during a morning commute and hours later as much as, if not more than, a just-brewed cup from their favorite ceramic mug at home. The ceramic coating protects the flavor of your roast from any metallic tastes, the THERMALOCK vacuum-insulated stainless steel keeps that brew hot up to 7 hours or cold up to 18, the leak-proof lid means you can take your beverage to go without the mess, while the CleanGuard feature keeps dirt and germs away from the drinking spout for a cleaner drinking experience. In fact, even at home, you may want to use this ceramic-lined travel mug instead of the one your kid painted at camp (but, shh, we won't tell them).