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, latte, and other drinks. Versatile Use: Perfect for gym, swimming pool, office, home, or on-the-go use. design makes it a great choice for everyday convenience. Specification: Material: Stainless Steel, Ceramic Capacity: 351ml Size: 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 boiling water due to built-up steam pressure. To safely open, first rotate and unscrew the lid to release pressure. When not in use, secure the lock to prevent accidental opening and potential burns.