This horn coffee mug is made of stainless steel and ABS that is portable and sturdy. With two long and short shoulder straps that can be used in combination. You can put it in your hand, tied to the bag, or back to the shoulder, does not take up space. 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. It can maintain the temperature of about two hours of hot drinks in the cup.