Every day I go to work and work overtime until late, and I often make coffee so busy that I forget to drink it. When I think about drinking coffee, I find that the coffee is already cold, and I have to reheat or replace the hot coffee, so I am using it myself. This coffee cup can keep the drinks in the cup warm for a long time. Although this is only a simple and practical product, I like it very much. Each of my products is actually used in my life.