This is a black and gold marble-patterned vacuum flask, also known as a thermos or coffee pot.
It is designed to keep beverages hot or cold for extended periods, often up to 12-24 hours.
The capacity varies by specific product, but common sizes include 1.0L, 1.3L, and 1.6L.
It typically features a double-walled construction with a vacuum for insulation.
The body is often made of stainless steel or plastic with an inner glass liner.