Premium Stainless Steel Construction: Crafted from high-quality stainless steel, this travel coffee mug ensures durability and a sleek, modern aesthetic, making it a reliable companion for your daily beverage needs. Compact and Convenient Size: With dimensions of 4.25 inches in width and 4.75 inches in height (10.8 cm x 12.1 cm), this tumbler fits comfortably in your hand and most car cup holders, providing easy portability for your on-the-go lifestyle. Vacuum Insulated for Temperature Retention: The double-wall vacuum insulation keeps your drinks hot or cold for extended periods, ensuring your beverage maintains the perfect temperature throughout the day. Ceramic Lined Interior for Pure Taste: Featuring a ceramic-lined interior, this tumbler prevents any metallic taste, allowing you to enjoy the pure, untainted flavor of your coffee or tea with every sip. Secure, Spill-Resistant Lid: Equipped with a tightly sealed lid, this mug minimizes the risk of spills and leaks, making it ideal for use during commutes, workouts, or any active lifestyle.