Intended for 100% polyester and nylon fibers. For natural and synthetic blended fabrics use iDye Poly with corresponding iDye natural color. iDye Poly requires the stove top method for dyeing. A single iDye packet will dye 2-3 lbs/1-1.3 kg of fabric. Color intensifier and instructions included. For tips and techniques, visit www.jacquardproducts.com