UV2 Yak Hair is an incredibly long, natural hair possessing a translucent sheen much like polar bear. It 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.

The natural fibers are great for blending because the strands of hair can be counted easily. This allows you to create flies that are more uniform in color and fullness. The coarse hair becomes supple when wet and has a lifelike quality when stripped.



Spirit River continues to lead the way in UV2 technology. They use a double dye process to give all their unique UV2 materials the added UVF/UVR ultraviolet wave lengths.

UVF is the fluorescent wavelength. Fish can see this spectrum in brighter colors than we see. This allows fish to see flies at a much greater distance, even in varying light and water conditions.

UVR or Ultra Violet Reflectance, is a UV light that cannot be readily seen with the human eye in some wavelengths, but it can be seen by most insects and animals.

Color	Code
Black	YAK-001
Chartreuse	YAK-093
Gray	YAK-060
Minnow Blue	YAK-103
Olive	YAK-030
Orange	YAK-090
Pink	YAK-097
Polar White	YAK-028
Purple	YAK-091
Red	YAK-095
Tan	YAK-018
Yellow	YAK-075