?【VACUUM INSULATED TECHNOLOGY】Coffee mugs with lid are with double walled vacuum insulation technology, keeping your favorite beverages hot for 3+ hours and cold for 9+ hours. Sweat proof, no condensation. ?【PREMIUM 18/8 STAINLESS STEEL】: The insulated coffee mug is made from premium 304 food Grade stainless steel, never rust, lead free, easy wash and unbreakable. Each cup is powder coated for a durable finish, no scratching, peeling or fading. ?【BPA FREE PRESS-IN LID】The eco-friendly lid of the coffee travel mug is completely BPA free; silicone gasket seals for maximum spill resistance. The wide mouth drinking hole at the top is straw friendly with a sliding lid to keep bugs and dust out of your beautiful garden for drinking. The slide cover is there to prevent heat/cold from escaping. It's not leakproof. ?【COMFORTABLE HANDLE】 Coffee cup with handle is always the best choice. Full loop designs fit mitts fully, easy grip, making it the great outdoor travel mug and the coffee mug in the office as well, tailored for ice and coffee lovers. ?【BEST GIFT】Our insulated coffee mug is simple and fashionable in design and easy to use. It is very suitable for daily use, whether it is a party, backyard barbecue, swimming pool or beach, outdoor camping, self-driving travel, or office environment, is the best choice. It is also suitable as a gift for him and her, for father's day and mother's day, or for the company.