Incredibly long, natural hair possessing a translucent sheen much like polar bear. Has no equal as a natural material for large saltwater patterns such as billfish flies. An affordable alternative to polar bear for steelhead/ salmon flies and streamers.
It's just a touch thicker and stiffer than most synthetics when it is dry, but quickly softens when it saturates with water. Yak hair’s long natural fibers are somewhat translucent, and the lighter colors react to UV light well. It comes in a variety of colors, and most importantly it is easy to separate individual fibers from the bunch and they blend well.