Vacuum Insulation - IDEUS 16 oz coffee tumbler is made from 18/8 stainless steel. Advanced double-wall vacuum insulation technology can keep the temperature of beverages for up to 6 hours (hot) & 12 hours (cold). Healthy Material - The insulated coffee cup is with premium 304 food-grade stainless steel inside, never rust, taste-free, lead-free. The lid was made of food-grade silicone, BPA-free, guaranteed high durability. Stylish and Durable - The thermal cup is dishwasher safe and has a No Sweat Design to make sure your hands stay dry. The tough powder coating on the colored tumblers won’t fade, peel, or crack through extended field use. Perfect Capacity - This thermos mug has a 16oz capacity. Its wide mouth makes it perfect for infusing drinks with fruit or ice and for effortless cleaning. Ergonomic handle on the side for a comfortable grip, making it the great outdoor camping mug and the coffee mug in the office as well. Press-in Lid - Silica gasket seals to achieve maximum spillproof capability. Drinking hole on the top, with a splash-proof sliding cover. Please note it is to keep drinks contained and prevent heat/cold from escaping. It is not leakproof. IDEUS 16oz Double Wall Insulated Coffee Mug with Spill Proof Lids. The double-layer vacuum design can ensure that you enjoy your coffee or tea at the most suitable temperature. The appropriate size and design of the handle make it easy to use in your home or office, and the spill proof design makes your can keep your home or office clean. Powder coating design for your to take outside or inside. IDEUS Insulated Coffee Mug is your best choose for coffee or team