Add some sparkle to your next project with Purely Gates Mylar Sheets. Mylar tears easily, doesn't tear thread, and won't dull your needle. These iridescent sheets will pick up the color of thread that is stitched over it for a more vivid look. Mylar may be washed, dried, and pressed. Leaving an iron on the embroidery thread for too long will melt the thread before the Mylar. Always iron embroidery from the reverse side when using this embroidery fabric. Three 18" x 30" Purely Gates Mylar sheets are included in each pack.