Mallard flank is one of those materials that earns its place on every tying bench. The naturally barred fibers have a distinctive mottled pattern that imitates the legs, gills, and wing cases of aquatic insects with uncanny realism — and the wide range of colors available here covers the most widely used applications in fly tying.Whether you're building a classic wet fly wing, wrapping a soft hackle collar, tailing a nymph, or adding a cheek accent to a streamer, Hareline's Mallard Flank delivers consistent fiber length and natural movement that holds up cast after cast.Uses Wings — classic wet fly and streamer wings with natural barring Collars — soft hackle wraps that breathe and pulse in the current Tailing — realistic tails on nymphs and wet flies Cheeks — accent feathers on streamers and salmon patterns Legs and wingcases on larger nymph patterns Available in 10 colors: Black, Med Dun, Natural, Olive, Wood Duck Tan, Brown, Bright Green, Hot Pink, Orange, and Red.