These pen are used to draw erasable markings on fabric materials. Water Erasable Pen known as water disappear or water soluble pens. These pens are used widely for temporary marking as their traces are easily removable by water. These fabric marking pens are convenient to hold and use while marking on fabric his pen is broadly demanded for its diverse application area in garment, shoe and craft manufacturing industries. These pens work great for quilting, embroidery, dressmaking or other projects where you need to mark fabric but don't want to leave a permanent mark. This pen work great when you need your marks to be visible for a period of time. When it's time to remove the marks.just spray a little clean water over them and they will disappear. Marks can be easily removed with a damp cloth. Used properly Water Erasable Pen is the safest most convenient marker available on the market today. Instructions: Always test the marker on a spare swatch of your fabric before using making sure marks remove to your satisfaction. On rare occasions certain dyes in material (dyes containing red in particular) may make marks difficult to remove. Mark lightly on wrong side of fabric. To remove markings rub gently with a well moistened cloth. Occasionally the mark will reappear when the fabric dries. Simply repeat the process.