351ml Capacity: The portable cup has a 351ml capacity, offering a tumbler design with a convenient size for holding a generous amount of liquid. Two Ways to Drink: Features an open top cover and a direct drinking option without needing to open the cover. Material: The travel tumbler is made of stainless steel with a seamless liner, providing durability and leak resistance at any angle. Temperature Retention: Keeps beverages hot or cold for up to 6 hours. Suitable for drinks such as coffee, tea, water, milk, soup, cola, and latte. Application: Ideal for use at the gym, pool, outdoors, at home, or in the office. Modern design complements any setting. Specifications: Material: Stainless Steel, Ceramic Coating. Capacity: 351ml. Dimensions: 7.65cm x 7.65cm x 14cm (3.01inch x 3.01inch x 5.51inch). Package Includes: 1 Coffee Tumbler Cup. Note: When very hot water is placed in the cup, steam pressure may build. Do not press the button to open while under pressure to avoid splashing. To open, first rotate and unscrew the lid to release pressure. When not in use, secure the lock to prevent accidental opening.