Spirit River
Having being recently acquired by Hareline, Spirit River is famous for its lineup of UV2 Materials. With its propriety dye technology, Spirit River claims that the UVF (Ultra Violet Fluorescent Wavelength) in bright colors allows the fish to spot flies and lures at a greater distance which is perfect for low light conditions. The other component of the UV2 Materials, the UVR (Ultra Violet Reflectance) which is a UV light that cannot be readily seen by the human eye, can be spotted by most insects and animals. With this combination, flies should be easily spotted by fishes.