351ml Capacity: This portable mug holds 351ml, perfectly sized for your favorite beverage. Dual Drinking Options: Enjoy your coffee with the open top lid or directly without opening the lid. Premium Materials: Crafted with a seamless stainless steel liner, this travel coffee mug is durable and leak-proof from any angle. Temperature Retention: Keeps your drinks hot or cold for up to 6 hours – perfect for coffee, tea, water, and more. Versatile Use: Ideal for the gym, pool, home, or office. Its modern design makes it a stylish choice wherever you go. Material: Stainless Steel & Ceramic Capacity: 351ml Size: 7.65cm x 7.65cm x 14cm / 3.01in x 3.01in x 5.51in Package Includes: 1 Coffee Mug Cup Important Note: When pouring boiling water into the cup, high steam pressure will be generated. Do not flip the button switch at this time to avoid splashing. To open the lid, rotate and unscrew it first to release the pressure. When not in use, secure the lock to prevent burns caused by the pop-up lid.