611807 Prym Magic Marker Aqua Standard/Fine Tip – Turquoise – 1 piece. The Prym 611 807 erasable marker is particularly useful for making marks that should not be visible once patchwork, quilting, sewing, or embroidery is finished. The marker is water-erasable and should be stored vertically, cap down, to prevent it from drying out. It allows you to draw thin or thick lines easily on both light and dark fabrics. All marks can be removed from the fabric by dabbing with a damp cloth or using the Prym water-erase pen. It is very important to test the marker on new fabrics before using it to ensure that the marks can be removed easily.