Flat Backs Hotfix can be easily ironed on to textile materials such as wool, cotton, linen, viscose, lycra, alcantara, silk, synthetics and denim, to name just a few. The flat back of the crystal has a layer of hot-melt adhesive that is activated by using heat and then bonds with the carrier material. They are wash-resistant and come in a multitude of colours, sizes and cuts - among them the Crystallized TM XILION Rose, the new generation of brillance. They can also be dry cleaned when applied properly!