The Flat Braid is made of 8 braided plies of UNI-Mylar. That makes outstanding butts, bodies and ribs for large flies. You can also fray this material for tailing. Available on spools of 7 yds in 6 colours: Pearl, Gold, Silver, Holographic Silver, Red (New 2008) et Pearl/Red (New 2008). Also available in combo pack.
It is a very "bright" material.