This creative double wall insulated coffee mug is specially designed for modern urban professionals, perfectly blending business office and outdoor lifestyle scenarios Featuring advanced double wall vacuum stainless steel technology that effectively isolates temperature transfer, ensuring beverages maintain ideal temperature for extended periods. Whether it's morning energizing coffee or afternoon refreshing cold drinks, you can always enjoy the perfect taste Carefully designed leak-proof lid system with high-quality sealing silicone ring, rigorously tested to ensure complete leak protection. One-touch open mechanism offers easy operation, can be opened with one hand, particularly suitable for driving, office work, outdoor activities and other scenarios Heat-resistant body design provides comfortable grip without burning hands. Available in 500ml and 400ml capacities to meet different drinking needs. Black and white colors for classic versatility, gradient purple and gradient blue for fashionable personality, multiple color options to match various occasions Food-grade 304 stainless steel interior ensures drinking safety, odor-free and easy to clean, durable and long-lasting. Wide mouth design facilitates thorough cleaning without hard-to-reach areas Whether for business meetings, daily office use, outdoor travel or fitness activities, this versatile insulated tumbler is your ideal companion, allowing you to enjoy quality beverage lifestyle anytime, anywhere