Description: Waterproof Permanent (After ironing) Paint Pens Fabric Markers Pens for Art sewing Crafts hand drawing Makers Perfect for Cotton, linen, silk, chemical fiber and other textiles writing, coloring and marking Commonly used in DIY featured T-shirts, clothes, sports shoes etc. Can also be written on plastic, paper and other materials Suitable for fine edge operations Specification: Material: Plastic Total Length: approx. 13.7cm/5.39 inch Color: Multi Color Package Includes: 12 Pieces Permanent Paint Pens Note: 1 As it is permanent, you must first use the scrap test to master the skills before buying it. 2. It must be a non-steaming iron. You cannot burn it with hot steam. 3. No ironing is also permanent, but the degree of color retention is not as good as after ironing, so do not use it as a temporary marker