A translucent, very fine diameter blended synthetic fiber for tying small flies. Translucent Very Fine Diameter Fiber 8" Length Approx. 5 gr. Per Pack Extremely Durable 0% Water Absorption - Very Easy To Cast Blend of EPA(R) SILKY FIBERS A few years after I introduced the original EPA(R) FIBERS I felt there was a need for a much more supple and thinner diameter fiber, especially for small trout patterns. After much trial and error I finally found the right combination, and EPA(R) SILKY FIBERS was born. Then, more time and effort was spent on blending colors to perfectly match baitfish pattern, which is the EPA(R) SILKY FIBERS 3-D. No synthetic fiber has this much life in the water, period. The action is like a marabou feather, but the difference is the durability. It&&';;s the ideal fiber to tie small patterns, especially small minnow, to attract the most worried wild trout. *Not recommended for flies longer than 3"