National Geographic Tumbler Graphic Air Touch Venti-7750

Key Highlights Stainless steel 304, used in this tumbler, is an austenitic grade of stainless steel containing both chromium and nickel. This specific alloy is widely recognized for its excellent corrosion resistance, especially in food and beverage applications. Its durability and hygienic properties make it a reliable choice for reusable drinkware. The double-walled vacuum insulation technology employed in this tumbler is crucial for its thermal performance. The vacuum between the walls minimizes heat transfer through conduction and convection, ensuring the contents stay at the desired temperature for extended periods. Look for tight seals to further improve insulation. Why You'll Love It Enjoy your favorite beverages at their ideal temperature all day long. This tumbler keeps drinks hot for 7 hours and cold for an impressive 24 hours, so your morning coffee or iced tea remains perfect regardless of the time. Cleaning is a breeze thanks to the large opening. No more struggling to reach the bottom of the tumbler. This design makes it easier to maintain hygiene and prevents residue buildup, so you can keep your drinkware fresh and clean with minimal effort. Take your drink on the go with the easy-to-carry handle. Whether you're heading to the gym, hiking, or commuting to work, the ergonomic handle provides a comfortable and secure grip, making it easy to stay hydrated wherever you are. Key Features 950ml Capacity: The large volume of this tumbler means fewer refills throughout the day, reducing the need for constant trips to the water cooler or coffee machine. Perfect for those who want to stay hydrated or caffeinated without interruption. Stainless Steel (304) Construction: The use of high-quality stainless steel ensures durability and resistance to rust and corrosion, extending the lifespan of your tumbler, making it a sustainable and long-lasting investment. Excellent Thermal Insulation: Keeps drinks at the desired temperature for extended periods, thanks to the vacuum insulation between the double walls. Enjoy hot coffee or ice-cold water anytime, anywhere. Scratch-Resistant Durability: Built to withstand daily wear and tear, the scratch-resistant finish helps keep your tumbler looking new even with regular use. No need to worry about unsightly scratches and scuffs. Perfect For Outdoor enthusiasts who need a reliable and durable tumbler for hiking, camping, and other adventures. The thermal insulation and sturdy construction make it perfect for any environment. Busy professionals who want to keep their coffee hot or water cold throughout the workday without constant refills. The large capacity and easy-to-carry handle make it an ideal desk companion. Pro Tips Pre-chill or pre-heat the tumbler before filling it with your desired beverage to maximize its thermal performance. Filling it with ice water or hot water for a few minutes before adding your drink will significantly enhance temperature retention. To maintain the tumbler's insulation, avoid placing it in the dishwasher. Hand washing with warm, soapy water is recommended to prevent damage to the vacuum seal.