UV2 Dos-Jail Rabbit Strips has a base color and a top color. It is then barred for a natural creature look. Great to use on zonkers or those pike/musky flies.
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.