Water erasable pen also named water soluble pen or water disappear pen, The water erasable pen can write on any surface, expecially use for dressmaking, shoemaking, handicraft, embroidery, artificial flowers etc.. for temporary marking. The writing trace can not disappear spontaneously, but it´s easily and quickly erasable by water. So it´s an ideal use for temporary marking and memory writing in sewing, quiting embroidery and craft project.