100% leak proof, do not worry the coffee does not dripipip onto the clothes. - This Vacuum Cup is very practical, unique goat horn shape, very fashionable and will add to your personality. - With one long and one short shoulder strap, can make the cup hanging in the bag as decorative. - The leather case design of the cup not only a beauty, you can also make it as the stent, that will easy to stand on the table. - This Thermos Mug does not contain BPA,very safe and health for human body.