I used 10 or more patches on A2 size posters and pasted it with a 500 yen coin pressed firmly into the irregularities of concrete. I have a thickness, so I dig into it a lot. I can not get rid of it for now.
Because it is smaller than the conventional one and the shape is uniform, we have made it easy to use regardless of the location. I think that the design will be a little better, but depending on the design the usage may be limited?