Note: Please handle with care when pouring boiling water to avoid scalding injuries. CLEANING AND MAINTENANCE TIPS * Do not put in the dishwasher * Do not put in the oven * Do not put in the microwave * Use a neutral detergent for cleaning * Clean promptly after holding beverages (such as coffee, milk tea, milk, etc.) * It is recommended to clean daily * Keep away from open flames * Keep away from sharp objects * Be careful of drops from heights * Be mindful of small parts Cup Capacity: 420ml/14.2oz. Cup Size: * 420ml: Diameter 9.8cm / Height 14cm Material: 316 Stainless Steel / 304 Stainless Steel / Silicone / PP Polypropylene Vacuum Insulation Technology: Preserve flavor and freshness to keep beverages hot for 3 hours or cold for 6 hours. Insulation Efficiency: Preserve flavor and freshness to keep beverages hot for 3 hours or cold for 6 hours. (Due to the larger diameter of Cup Cup's cup mouth, the insulation efficiency is somewhat reduced. However, the insulation duration is sufficient to meet your enjoyment of a cup of delicious coffee.) * The first use may come with some odor, which is a normal phenomenon. Please rest assured. You can soak it in hot water with half a lemon for a few hours. * After use, please clean it promptly to avoid breeding bacteria for a long time.