It is a very soft rubber material. Although the instructions say that white images may not be printed, white text on a black background was clearly printed.
Since I placed the order and received it two days later, I was actually able to receive the product very quickly, with one day of work and one day of delivery.
Due to the nature of the material, there are many small gaps, so when you need to print letters smaller than 10pt, it is better to choose another material rather than this material.