BUILT-IN CORK - ceramic coffee tumbler, both the large handle and cork bottom are great for grasping the mug. When it filled with hot coffee, no worry about burning your hand or fingers. The cork bottom not only insulates the heat but also prevents scratching and staining. SPLASH-PROOF LID - ceramic coffee mug with lid, the lid features a sliding door on top, and the lid sealed along the mug top edge with a rubber gasket to trap in the heat. This lid can prevent the splash but not the spill ( the liquid will leak if you turn over the coffee cup ). COFFEE MUG WITH HANDLE - 12 ounces mug perfect for coffee, tea, cocoa, cereal, mocha, cappuccino, espresso tea, sipping lattes, hot chocolate, etc. It's a great gift for parents, anniversary, wedding, Mom and Dad, couples, friends, lovers. NOTE - because the bottom of the cup is a cork, you can't put the cup in the dishwasher and microwave oven, which will shorten the service life of the cork. You can rinse the cup with water. HIGH QULITY SERVICE - dear buyer, due to the particularity of ceramics and handmade, the mug could be some minor flaws, this is normal. Sincerely hope that you can understand! If you have any question in products, contact us first please, and we will better solve it for you. Thank you!