Black coffee mug, reusable double-walled vacuum-insulated coffee cup, eco-friendly stainless steel travel or office mug

Material: Professional-grade, double-walled 304 stainless steel with vacuum insulation, durable and antibacterial, preserving the odors of your drinks. Appearance: The insulated mug is easy to grip thanks to its eco-friendly and non-slip material. Its exterior surface is scratch-resistant and easy to clean. Insulation: Designed to keep your drinks hot or cold at the ideal temperature for 6 to 8 hours, the stainless steel vacuum insulation ensures a consistent temperature. Function: In the car, at the office, or at home, if the mug tips over, there's no risk of leaks. The lid remains perfectly leak-proof.