Health-Conscious Material: Crafted from 304 stainless steel, this insulated coffee mug ensures that your drinks stay safe and healthy. It's rust-resistant, BPA-free, and comes with a silicon sleeve for a comfortable, non-slip grip.Long-Lasting Insulation: The double-walled vacuum insulation keeps your drinks hot or cold for hours. Perfect for any setting, whether it’s the office, camping, or travel. It retains heat at 131°F even after 4 hours, starting from 203°F at room temperature.Leakproof Design: You won't have to worry about spills or leaks with its secure, flip-lid design. Even when flipped upside down, the lid stays leakproof, making it ideal for bags, cars, and backpacks.Convenient to Clean: The wide-mouth design allows for easy washing, though it's recommended to hand wash the mug and avoid using the dishwasher for longer-lasting use. Note: Not microwave safe.Compact and Practical: The capacity and slim design make it compatible with most coffee makers. The leakproof lid ensures no spills, secured by two audible "clicks" when properly closed.