Wapsi Polarflash fly tying material creates brilliant wings, tails, ribbing, and body components. Micro nylon filaments tightly wrap each strand of Flashabou, to give you a strong fiber with pronounced light diffusion, increased sparkle, and flash. Use to create brilliant wings, tails, ribbing, and bodies Made of Flashabou, tightly wrapped with micro nylon Strong and fibrous Superior light diffusion, sparkle, and flash