When choosing which place to design the restroom signage. I think a very representative thing is the stamp. The design and meaning of the stamps are very obvious, so I created a representative restroom signage for the post office in the form of stamps. I used the most common pattern of stamps, the combination of horizontal stripes and circles so that it does not lose the characteristic aspects of stamps. For the content, I chose the most representative toilet paper and toilet icon, which simply and clearly explained the meaning of this signage.