A black and white cloth patch that can be ironed on to clothing. 3.5"H x 2.5"W
 
 
YES: cottons, cotton blends, wool, silk, velveteen, velour, denim (the softer the better), t-shirts and sweatshirts are probably your easiest fabrics; lycra, slinky (a little trickier, but possible), cotton sweaters are easiest.  Always test fabrics if you’re not sure, read the garment hang tag.
NO: nylon jackets, velvet, acrylic, leather, vinyl, trigger (fabrics with a finish).  Don’t forget to read the hang tags.