We have tried: We tried the pencil on various fabrics - cotton canvas, lonet, satin, sports knit, polar fleece (see photo in inspirations). The materials were drawn well, preferably on cloth or canvas. The lines marked in pencil are accurate and clearly visible, and every seamstress will appreciate this when cutting and sewing. After ironing or steaming, the marked lines have partially disappeared. After washing to the recommended temperature of the material, the marking disappeared completely. The drawn lines and marks did not dust out as with "classic chalk".