Holographic "Angel Hair" dyed in shades that fly fishers have long been missing. Colors marked "UVR" strongly reflect UV radiation, i.e., they "light up" the fly at great depths if sunlight penetrates there.
FF Futurefibre is a classisc Flourofibre material. Very cool colours. Here you get up 5 times more than you are used to buy. Can be used as tail on salmon/seatrout flies, but try mix it in a wing, as a back on a...