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 Coffee: Features an open top cover type and a direct drinking type without needing to open the cover. Material: The travel coffee tumbler is made of stainless steel seamless liner, providing durability and no leakage at any angle. Keeps Hot and Cold for 6 Hours: The insulated coffee tumbler is suitable for hot or cold drinks such as milk, soup, cola, tea, water, coffee, and latte. Application: Perfect to bring the portable tumbler to the gym, swimming pool, or anywhere you go. In addition to outdoor activities, its design makes the insulated mug ideal for use at home or in the office. 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 Coffee Tumbler Cup Note: When very high temperature boiling water is placed into the cup, high steam pressure may be generated. Avoid flipping open the button switch at this time to prevent splashing. If you want to open the cover, first rotate and unscrew the cover to release the pressure. When not in use, please fasten the lock to avoid accidental opening of the cover.