This eraser brush is used to clean my suede caterpillar. Soft side to remove stains, harder side to smooth. To remove stains, it takes a little stress, but it is quite effective. As I have 2 pairs of different colors and the gum is easily dyed, I took 2 Eraser Brush.
I am satisfied with this product that I find still a bit expensive. Hence my rating to 4 stars.