iDye Poly is virtually the only dye that will color polyester. In fact, it will color almost anything synthetic, including plastics and nylons, buttons, frisbee discs, Worbla & Thibra, 3D printed objects, toys, dolls, wigs, cleats, urethane coatings and more. The dye comes in a dissolvable packet, so there are never any messy powders to handle: simply drop the packet in a pot of water, add the fabric or objects and bring to a simmer. For Jacquard iDye Poly instructions, click here. Details: Available in multiple colors 14 g packet Dyes 2 - 3 lbs. of fabric For use with polyester, nylon, poly/cotton blends, plastic and more Vibrant results