We love these easy-to-use fabric markers. Chaco liners create a fine line on most fabrics with a click-wheel that deposits a trace of powdered chalk. Chalk powder is refillable, and the plastic case is leak-proof when fully closed for safety in your sewing bag. This Chaco Liner is filled with blue chalk powder, which will show well on many fabric colors.
Be sure to test your marker first on a piece of scrap fabric to be sure that the lines and marks can be erased. (Do not use on fabrics that are not washable.) Pat the powdered ink to erase lines and marks. Wash fabric with mild detergent to remove any persistent marks. Ironing or dry-cleaning may make the marks permanent.