Cricut UV-Activated, Color-Changing Iron-On White - BlueTired of the same, plain Iron On? Change it up with the Cricut Color Changing Iron On. This material changes its color based on temperature. Suitable for cotton, polyester, rayon and cotton/polyester blends. Washable and stretchable without fading. For use with Cricut Explore 3 and Cricut Maker 3 cutting machines.