Introducing our latest innovation - the 500ml Innovation Design Vacuum Stainless Steel Beer Mug With Opener. This high-quality mug is perfect for keeping your beer cold and fresh, whether you're at home or on the go. With its durable stainless steel construction and vacuum insulation, it's built to last and will keep your drink chilled for hours. Plus, it comes with a handy opener attached to the bottom, so you'll never be caught without one again. Best of all, we're a factory, so you can trust that you're getting a top-quality product at a great price. Cheers to the perfect beer mug!