Fluroflash.. is a Hi-Viz, Flourescent, synthetic hank material.
Can be used for Wings.. Tails.. Ribbing.. in fact loads of fly-tying applications.
The resulting pattern will be VERY VISIBLE and often proves to be iresistable to predatory fish..
Generally, Fluorescent materials produce visible or invisible light as a result of incident light of a shorter wavelength.. (i.e. X-rays, UV-rays, etc.) 'exciting' the materials or pigments within it.
The effect will vary quite markedly depending upon the ambient lighting and the intensity & type of incident light.. and ceases as soon as the source of 'excitment' is removed..
Fluorescent pigments in normal daylight have a white or light colour, whereas under excitation by UV radiation they irradiate an intensive fluorescent colour.
GREAT FOR BLOB TAILS!!