DescriptionThis is a heating coaster, made of plastic and electronic part, durable and practical. The doughnut shape design makes it more likable. Charging via USB is very convenient for home use and office use. Suitable for keeping warm for Drinks, coffee, tea water, milk and etc. It is also a good gift for your friends. Features-Color: Yellow coffee. -Material: Plastic and electronic part. -Size: About 10.8x10.5x1.6cm/4.3x4.1x0.6inch. - Made of plastic and electronic part, durable and practical. - Charging via USB is very convenient for home use and office use. - Suitable for keeping warm for Drinks, coffee, tea water, milk and etc. - It is also a good gift for your friends. - One-handed control, carry warmth with you, small size does not take up space, can be carried lightly.