HIGH-QUALITY MATERIALS】Coffee mug made of high quality stainless steel, durable and prevents the increase of bacteria, keeps drinks odor free; Anti-slip protective cover prevents the mug from falling; The buckle never spring back to touch your nose, you can easily open the lid with just one hand ; Open sip hole makes it easier to drink; the bottom of the coffee cup is glued with a rubber bottom, which can effectively prevent the coffee cup from sliding and overturning