can disappear at high temperature, no traces, will stain your clothes or fabric Say goodbye to messy marks and hello to lines with our disappearing pen cores Perfect for enthusiasts, artists, and craftsmen who enjoy working with leather and fabric Whether you ' re working in a workshop or at home, our disappearing refills are great for all your sewing and crafting needs uninterrupted creativity with our high temperature disappearing refills, designed to work on leather and fabric materials