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 Drinking Options: Enjoy open-top access or drink directly without removing the cover. Material: The travel coffee tumbler is constructed with a stainless steel seamless liner, ensuring durability and leak-proof performance at any angle. Temperature Retention: Keeps beverages hot or cold for up to 6 hours, suitable for coffee, tea, water, milk, soup, cola, and other hot or cold drinks. Versatile Use: Perfect for the gym, office, home, or on-the-go lifestyle. The modern design makes it a great choice for everyday use. Specification: Material: Stainless Steel Capacity: 351ml Size: 7.65cm x 7.65cm x 14cm / 3.01 inch x 3.01 inch x 5.51 inch 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 safely open, first rotate and unscrew the lid to release pressure. Always secure the lock when not in use to prevent accidental opening and potential burns.