Set 12 Pieces Blue Water Erasable Disappearing Pen Fabric Marker For Fabric Garment Marking The Blue Water Erasable Pen's writing trace does not disappear spontaneously, but it can easily and quickly erasable by water. Water Erasable Pen can write on any surface, especially use for dress marking, shoe marking, handicraft, embroidery, cross stitch, patchwork, needlework and artificial flowers, etc. Do not pack and seal in a bag before markings completely disappear. Markings last longer with less ventilation Do not use any solvents or cleaning agents. Try with a piece of waster cloth before use. Nontoxic ink.