Introducing our 500ml Innovation Design Vacuum Stainless Steel Beer Mug With Opener, the ultimate solution to keeping your favorite beverages chilled for longer duration. Crafted with precision at our factory, this stainless steel mug features a vacuum insulation design that efficiently retains the coldness of your beer. With an added built-in opener, conveniently crack open your bottle and indulge yourself in refreshing moments. Embrace the quality and functionality of our factory-made beer mug, designed to enhance your drinking experience.