Keep Hot and Cold-- The double wall vacuum insulated travel mug keeps hot/ iced beverage for 12 hours. Suitable for outdoor adventure, road trips, sports event, home, office, fit most of vehicle cup holders. Leak-proof-- Our coffee mug is equipped with a leak-proof lid allows it without leaking. The bottom of the coffee mug has a non-slip silicone pad to prevent it from sliding and tipping over. Easy Operate-- 510ML drinking capacity, the lid can be open or close by one hand. There is a handle on the lid for easy to carry. Easily remove the lid by twisting for quick filling and cleaning. Function-- Suitable for office, travel, school, work, car cup, indoor and outdoor. It is suitable for anyone, student or worker to enjoy coffee, tea, wine, juice. Reusable-- Double wall coffee cup is made of high quality stainless steel and food grade PP with BPA free polypropylene lid, durable and prevents the increase of bacteria.