UV2 Caddis Nymph Dubbing have a mix of primary colors that have been enhanced with UV Florescence and UV Reflectance dyes. They are then blend in with other fibers to achieve the over all base color while still giving it all the multi color property's of UV2. Each dubbing will kick out a host of color spectrums.
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.
This assortment contains 6 Colors: Adam's Gray, Black, Dark Brown, Golden Stone, Olive, Tan
DTCN-UV2