Poly Sparkle™ is a hard-wearing and sparkling thread that's twisted with a strand of Holoshimmer thread. The polyester component makes the thread hard-wearing and soft, while the Holoshimmer thread lets your project sparkle and shine. The result is a wonderful special effect thread that's perfect for machine embroidery, decorative stitching, quilting, embellishing costumes, dance and cheer uniforms, holiday projects and more.