The underfur is very soft and fluffy and “comes alive” in the water much like marabou. Averaging 1″ to 3″ in length it is excellent as a tailing material on streamers or as a dubbing on trout flies. Being highly absorbent it helps your fly sink quickly.
Guard hairs average 2″ to 4″ in length and are straighter and less flexible than than the underfur. They are excellent as a tailing or winging material on trout streamers, salmon and steelhead flies.
When the guard hairs and underfur are tied in together it makes one of the sexiest fly tying materials available. The hair ties in with minimal bulk yet has a very full appearance. At the same time maintaining an undulating action in the water.