This is a handy little pen to have in your sewing kit. Use it to mark your fabric with pivot points or an indicator to stop sewing in a precise spot. This is also ideal for marking embroidery designs onto fabric. When you no longer need the guidelines you have marked, simply remove them by immersing in cold water, or wiping with a damp cloth. You should always test mark a scrap of your fabric to ensure that it washes out completely.