2-in-1 Precision Tip Fabric Marker with Eraser! Precision tip marker on one end with wide slant eraser on the other used for quilting, decorative embroidery, handicraft, dressmaking and more! Markings stay on at least 3 hours and then disappear automatically after 1-7 days (may vary with material and surroundings such as temperature, humidity and air circulation). Use on-board eraser for immediate removal. Test all fabrics before using by making a mark and ironing it. After marking, fabric needs to be heated/ironed, treat with clean water to prevent discoloration.