These crayons can be used to dye fabric by drawing on it and then ironing. They are suitable for cotton, linen, and silk, but please test on a sample of rayon, cupra, acetate, polyester, and synthetic fabrics blended with cotton beforehand. Wool is not suitable. Ironing temperature varies depending on the fabric, so please adjust according to the washing instructions. This is a 16-color crayon set for fabric painting, compatible with various fabrics. - Number of colors: 16 - Material: Crayon - Features: For fabric painting - Manufacturer: XX Corporation Thank you for viewing.