[EASY AND CONVENIENT]Unlike normal chalks, will be dusty residue that is not easy to clean. Unlike hydrolyzed pen,will disappear in a few hours or one-two days, cannot control the good time.Our sewing markers won't rub away before your project is finished.It can erasable with Ironing easily, quick and convenient. [HEAT ERASABLE]Special ink erases with heat, the marking content will vanish when the temperature up to 60 ℃. a quick touch of the iron and the marks are gone, no residue to mess your clothes or fabric, the hanging ironing machine,steam ironing machine, oven and hair dryer can remove the marks, so as to avoid wash cleaning. [PLEASE NOTE]The white mark will reappear when the temperature is around -60℃.The blue, red, and black mark will reappear when the temperature is around -8℃. [APPLICATION]Help complete the clothes making and trace the marking easily, can meet you demands for distinguishing and marking, suitably mark on various colors of fabrics, suitable for both quilter and tailor. [HIGH QUALITY]Our erasable pens has high hardness steel tip, which is wear resistant, no ink leakage, the lines drawn are and clear, colors bright.