Appearance: The coffee mug is easy to hold with non-slip environmentally-friendly scrub material. You also don't worry about the outer surface being easily scratched and cleaned. Latest Insulation Structure: This coffee mug had used the heat preservation technology after the updated. The constant temperature is longer and more stable. After you close the lid, you can achieve at least six hours of heat preservation. Function: When you are driving, in office or at home, if the reusable coffee cup topples on the floor, it will not spill or leak out. The lid will remain tight. One coffee cup has many uses: In addition to holding coffee, it can also contain all kinds of drinks you want. Such as cola, juice, soda and so on. Before using coffee cup to hold different drinks, it is recommended to clean the inner pot of the cup to prevent the flavors from mixing together and affecting the taste. Material: The double-wall vacuum insulation made of high quality professional double-layered stainless steel, durable and prevents the increase of bacteria, also keeps drinks odor free.