How to Iron-onHeat the iron to a moderately high temperature that would not burn the fabric.Place the patch in the desired position & place a pressing cloth (handkerchief or pillowcase) on top to protect the patch.Press the iron down for 20-30 seconds, depending on the fabric. Let sit for 5 minutes until fabric is no longer hot. the heat-sealed glue backing offers you the possibility of sewing or ironing any type of fabric; And the patches can also be deleted easily, you can transfer and use the patches again. You better sew them if you want to keep them and never fall off. Embroidered patches: To apply the embroidered patches use an iron. Before ironing, make sure your clothes and fabrics are ironable materials. Each patch is washable at 40C or lower, can be machine washed and tumble dried.l cannot be applied to any waterproof materials, plastics, hard fabrics or covers. It can fall easily. Repair and embellish with iron-on patches your t-shirts, skirts, jeans, vests, hats, backpacks, clothes, curtains, pillows, scarves, duvets, etc. Use these iron-on patches to make your clothes and bags more attractive. A gift to a friend is also a good choice. Each of our patch packs comes with an assortment of patch options that will make your backpack, jean jacket, face masks or clothing stand out!Show off your personality with a pack of embroidered patches designed exclusively.