The patch has a special adhesive on the back that is activated by the heat of the iron.
Preparation: Place the garment on a hard and flat surface (ironing board). Make sure the area is clean and dry.
Placement: Place the patch over the tear with the adhesive side facing down.
Ironing: Set the iron to the temperature for cotton (approximately 150°C-180°C) without steam. Press the patch firmly for 20-30 seconds.
Cooling: Let the garment cool completely for at least 5 minutes before moving it, so the adhesive can "set".