Black reflective iron-on tape.
It won’t stick well to smooth fabrics. Check before use. Adhesive is PU based.
Use 130-170°C for application. It is best to use it with some baking paper. If you use a domestic iron, try using a low heat first,
For best results try to also apply hand pressure.
Adhesive softening point: 104°C
Price per meter.
Try iron settings and fabric compatibility on some scrap fabric before applying it to your project!