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, offering durability and leak-proof performance at any angle. Temperature Retention: Keeps beverages hot or cold for up to 6 hours. Suitable for hot or cold drinks including coffee, tea, water, milk, soup, cola, and latte. Versatile Use: Perfect for gym, office, home, or on-the-go use. Its modern design fits seamlessly into daily routines. Specification: Material: Stainless Steel 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: Do not open the lid immediately after pouring boiling water due to pressure buildup. To release pressure, rotate and unscrew the lid slightly before fully opening. Always secure the lock when not in use to prevent accidental spills or burns.