Features:The special fabric will have traces of residue. It can be rubbed with hot water of 60 degrees centigrade or more, and the trace will be eliminated. Due to the difference in fabric texture, the fading effect will be different, and it will be tested before use. Store in room temperature, softening above 58 degrees- centigrade. Long-term storage surface will fade, but does not affect normal use. The chalk has chlorination, water sensitivity, steam ironing quick elimination. The gasification time varies according to the fabric (48 hours - 168 hours). Adopt high-density manufacturing process, low wear rate and more durable. Environmentally friendly materials, non-toxic, odorless, enhanced in strength, not easily broken. Used to mark grid on the dark embroidered cloth, and then use the electric iron to heat it up after the embroidering. It is different from ordinary ordinary powder. The surface is treated with special coating and it is not sticky, and it is harmless to the human body. The powdered lines are softer and more vivid. Specification:Material:ParaffinPackage List:48 x Tailor Chalk Note: Even if it is broken into several parts , it can be used. Don't throw it away. Unless you have already used it, it is recommended that you take it home and try it out! Especially some ultra-thin coated fabrics or fabrics that are easy to reflect!