The liner of this thermos cup is made of 18/8 stainless steel, which will not rust, resist corrosion, have no peculiar smell, and will not cause harm to the human body. It comes with a straw for easy drinking and doubles as a kid’s water bottle. It is very convenient to carry and can keep warm for a long time. The quality of this mug is so good that you won’t have any issues with long-term use. It can hold coffee, beverages, hot drinks, cold drinks, tea, milk and other beverages, and can be used for work, meetings, driving, traveling, and vacationing. It is very easy to clean and can be used with confidence. Can print your logo on it.