A steel glass, also known as a stainless steel tumbler or cup, is a drinking vessel made from stainless steel. It is durable, resistant to rust and corrosion, and can keep beverages hot or cold for extended periods. Steel glasses are popular for their sleek appearance, eco-friendliness, and versatility, making them suitable for both indoor and outdoor use. They are commonly used for serving water, juice, cocktails, and other beverages, and are easy to clean and maintain.