Set of 1000 iron-on fabric patches - random model Composition: Viscose, Polyester Dimensions (mm): 60 x 30 Easy to Use: Each iron-on patch has a heat-activated adhesive on the back, allowing you to iron or sew onto any garment in no time. Simply place the iron-on fabric on the cloth and press with the iron for 20 to 30 seconds. There are 50 different styles of iron-on fabric patches in this set with bright and vibrant colors! The embroidered iron-on patch stays in place even after washing, it is machine washable, and you should turn the garment inside out before washing, recommended at less than 40°C. Instructions for Ironing the Patch: the iron-on patch should not be applied to waterproof materials, plastic, hard fabrics, or covers, as it may peel off easily.