351ml Capacity: The portable cup has a 351ml capacity, featuring a tumbler design with an ideal size for holding a generous amount of liquid. Two Ways to Drink: Enjoy open-top access or drink directly without removing the cover. Material: Constructed with a stainless steel seamless liner, this travel coffee tumbler is durable and leak-proof at any angle. Temperature Retention: Keeps beverages hot or cold for up to 6 hours, suitable for coffee, tea, water, milk, soup, cola, latte, and other drinks. Versatile Use: Perfect for gym, office, home, or on-the-go use, with a modern design that fits any setting. Specification: Material: Stainless Steel, Ceramic Capacity: 351ml Dimensions: 7.65cm x 7.65cm x 14cm / 3.01inch x 3.01inch x 5.51inch Package Includes: 1 x Coffee Tumbler Cup Note: Do not open the lid immediately after pouring in boiling water, as built-up steam pressure may cause hot liquid to spray. To open, first rotate and unscrew the lid to release pressure. When not in use, engage the lock to prevent accidental opening and potential burns.