which is the best choice of reflective piping

The edge of the reflective tape is best to use oblique cut by using high reflective polyester fabric or high reflective TC fabric. It is not recommended to use the ordinary reflective fabric (brightness is too low to lose the designer's intentions), silver reflective is not recommended (too thick and hard). Width is usually 1.3cm or 1.5cm. It is the width of reflective fabric.