Kreinik Flash In A Tube™ is a fine-fiber synthetic material which exhibits a metallic-like gleam. Its’ reflective properties add sparkle to the tails and wings of many types of flies. The hair-like fibers are soft and static free, making it easy to work with. Kreinik Flash is unaffected by saltwater or epoxy finishes, yet is flexible enough to be mixed with marabou, enhancing its action in the water. 250 - 7" strands in each pkg.