351ml Capacity: The portable cup features a 351ml capacity, designed with a tumbler shape that offers an excellent size for a significant amount of liquid. There Are Two Ways to Enjoy Your Beverage: An open top cover option and a direct drinking option without opening the cover. Material: The travel coffee tumbler is crafted from a stainless steel seamless liner, ensuring durability without leaks at any angle. Keeps Hot and Cold for 6 Hours: The insulated coffee tumbler is suitable for both hot and cold beverages, including milk, soup, cola, tea, water, coffee, and lattes, etc. Application: Take the portable tumbler to the gym, swimming pool, or wherever you go. Besides outdoor activities, the modern design makes the insulated mug perfect for use at home or in the office. Specification: Material: Stainless Steel Ceramic Capacity: 351ml Size Chart: 7.65cm x 7.65cm x 14cm/3.01inch x 3.01inch x 5.51inch Package Includes: 1 Coffee Tumbler Cup Note: When boiling water at high temperatures is placed in the cup, high steam pressure may build up. Please do not open the button switch at this time to prevent splashing. If you wish to remove the cover, please first rotate and unscrew it to release the pressure. When not in use, please secure the lock to avoid burns from the popping cover.