It's just like regular fly-fishing Flashabou, except the Montana Fly Company® Holosheen features a smooth, metallic finish that reflects, sparkles, and dazzles in the light of the sun. This excites fish and provokes more strikes. This fly-tying material from Montana Fly Company lays flat and has a holographic, multicolored look. Ideal for streamer patterns. Thin enough for bodies, wing cases, and ribs on nymphs and dry flies.