Mr. Pen erasable fabric marking pens set includes 5 pens with water-soluble ink for temporary marking on fabrics for tailoring, sewing, and crafting. These pens glide smoothly across fabric surfaces, delivering clean, fine lines for precise guidelines and accurate sewing. Marks are easily removable with water, ensuring no permanent stains remain on fabric for clean, professional finished projects. Avoid ironing fabric after marking and before erasing, as heat may set the ink and make marks difficult to remove. This set offers a reliable way to temporarily annotate adjustments on fabrics without long-term alteration to material.