Promotional products: Keep your favorite beverage hot in your car and at your desk with this dual power-source, 16 oz. stainless steel heater travel mug. Features a stainless steel inner wall with a frosted acrylic/stainless steel outer wall, rubberized anti-skid bottom and press on lid with open/close thumb slide. Unit is designed to keep beverages approximately 110 degrees Fahrenheit with USB use, and 140 degrees Fahrenheit with cigarette lighter adapter use. 5.5VDC USB power cable conveniently plugs into any computer USB port. 12V cigarette lighter adapter fits on the USB cable for use in your vehicle.