Reflexbänder

The effect relies on tiny glass beads or prisms in the surface. They send incoming light back instead of scattering it. The tape therefore only lights up when light falls directly on it – in darkness without headlights it stays inconspicuous.

Placement matters for the effect. Tapes on arms and legs move and therefore catch the eye more than a static area on the back. Several short strips often work better than one long one.

Stitch along both edges with matching thread. Do not sew across the tape, as every seam interrupts the reflective surface and reduces the effect.

The surface does not tolerate heat. Do not press directly on it, and do not wash finished items too hot, or the reflective particles come away over time.