Rothco patches label, are known for their quality workmanship. Three-dimensional design obtained a special technique of embroidery. Foil on the back label, have a purpose for improved absorption of adhesive. Heating the foil you can stick the label to the fabric without adhesives.
Americanshop recommendations:
Do not use, heating option on materials which contain nylon or polyester.
For permanent and safe adhesion, use high-quality quick-drying glue.