Put sparkle in your scuds. This material is great for the backs of all types and sizes of scuds. To tie a smaller fly all you have to do is stretch the material as you tie it on. Flexi-Flash Back is also fantastic for nymph thorax backs. Each package contains 18 strips, 1/8 inch wide and 3Â½ inches long, giving the tier over 5 feet of material. Enough to do dozens of flies. The first color is the "Flexi" material and the second color is the Holographic "Flash". All of the colors are semi-transparent except black which is opaque. Pictured: Size 14 Olive Scud tied with Flexi-Flash Back and Soft Dub Dubbing Material.