A translucent, very fine diameter synthetic fiber for tying small flies. 8" Length Approx. 5 gr. Per Pack Extremely Durable 0% Water Absorption - Very Easy To Cast Ideal for Smaller Patterns such as Shrimp, Crab, & Trout Flies 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 for small flies such as crab & shrimp, and small minnows to attract the most worried wild trout. After much trial and error the EPA(R) SILKY FIBERS was born. No synthetic fiber has this much life in the water, period. The action is like a marabou feather, but the difference is the durability. *Not recommended for flies longer than 3"