It measures 1/2" wide.
This kind of trim is called "guimp" or "gimp trim", (or Chinese Braid ...oh or French Scroll) It is used in various crafting applications. Great for costuming, home decor and garment embellishment. It moves around curves and corners with ease. It can be sewing with the machine, by hand or glued.
It is made of light BLUE and poly support.
Made in USA
***look in the last photo to see additional colors this trim comes in. *** (or let me know if you are looking for something specific, and I will scout around for ya.)
If you need a larger yardage, let me know, and I will gladly create a special order, just for you.