ITEM NAME:13pcs Boom Letter Embroidery Patch Applique Badge Sew Iron On Bag Fabric Crafts 13x Boom Oops Letter Embroidery Patch Set Applique Badge Sew Iron On Clothing Craft DIY SPECIFICATIONS.(2) Fix patch's position by iron on its front side about 10-20 seconds or sew a few stitches. (Protect patch or cloth surface by cover it with damp or thin cloth). 5) Easy to use, can either iron or sew on to wherever you want.