Angelina Fiber is a very fine, unique fiber (10 denier). It is incredibly luminescent, and it has an extremely soft hand. Imagine diamond-like dew drops on a spider's web and the iridescence of butterfly wings! Angelina comes in multiple colors that can be mixed and bonded to a glistening, shimmering, colorful accent to any project. The heat bondable Angelina, which is called "Hot fix", will bond only to itself, not the paper, other fabric or your ironing board. These fibers are polyester which makes them washable (gentle hand washing is recommended), dryable (lay flat to dry), and dry cleanable. Heat bonding instructions: Simply place a small amount of Angelina fiber between two sheets of tissue paper, tracing paper or parchment. Heat iron to "silk" temperature setting and no steam. Approximate bonding temperature is around 225 degrees Fahrenheit. Gently, with little pressure, move the iron back and forth, for a few seconds, checking frequently on the bonding progress by lifting the top paper. If it has not bonded, either iron it again or increase the temperature on your iron. Be careful not to "fry" (change the color and dull the sparkle) the Angelina fiber with too much heat, pressure or the amount of time your iron is in contact with it. Sold by the 0.5 oz bag, Heat Bondable Angelina Fiber - Calypso Blue.