WHITE VANISHING DISAPPEARING INK PENS - 3 PACK Pack of 3 White disappearing ink pens. Perfect for temporary marking in sewing rooms, embroidery services, designer studios etc. Write on fabrics, paper, wood, plastic. White pen is goof for marking on black or dark fabrics. Drawings and markings come out clear in a few seconds. Disappearing time is about 1-4 days. This may vary with fabric's type and surroundings conditions such as temperature, humidity and air circulation. Erasable easily and quickly by instant eraser by water or ironing.