Heat bonding the fibers result in a polyester fabric that can be cut, stitched, glued or fused to fabrics. It is washable, dryable, and dry cleanable. You can mix colors or keep them separate, they all bond to a glistening, shimmering, colorful accent for any project. All packages include instructions for heat bonding the fibers. Approximately 1/2 ounce. Approximate bonding temperature is around 225F/107C degrees. Generally Hot Fix fibers will only adhere to themselves and not to other fibers, papers, or fabrics.