Semperfli Fluoro Bright Fly Tying Thread

No tyer can be without a range of fluoro threads in their tying kit and Fluoro Brite is a great choice.
 
Semperfli Fluoro Bright Fly Tying Thread is a twisted fluorescent thread. To get it to lay perfectly flat simply untwist with your bobbin holder and then Fluoro Brite can be used as a flat floss.
 
Fluoro Brite has the most vibrant UV which the fish will find irresistible.  It has been specially formulated for its fluorescence and comes in 240 denier (3/0). It is recommended for hooks 10 to 2/0 but if you want to use it for smaller flies, Fluoro Brite will split down further for you.
 
Use it as a hotspot, for ribbing, a body or even a fab hot spot tail!  For tails you can fold Fluoro Brite four times in a loop and tie it in the tail of a fly, cut to length then tease the fibres apart with a dubbing brush or needle and you get an astounding crinkled tail with what looks like little firelights on the tail of your fly.
 
Since publication of Joseph Keen's book - Fluorescent Flies (1964) and Thomas Clegg's book – The Truth About Fluorescents (1967) fly tyers have been working with fluorescent materials.  Semperfli decided to make a fluorescent thread with the advantages that it could be used as a tying thread or as a floss, when untwisted with the bobbin holder.  Fluoro Brite was born to be different. What is well known is that fluorescent materials do attract trout, salmon and other species. Whilst we cannot see material effects, except under a UV torch where we see the glow, many fish species see this like a light in the dark as UV light penetrates the water deeper than any other part of the spectrum.
 
Whilst fluorescent materials work well at all times of day, and also for around one hour before daylight and one hour after nightfall. This is because even though we cannot see them, UV rays from the sun still hit the water and ignite your flies.
 
240 Denier / #3/0
Recommend hook size #10 - #2/0 (when split it can be used down to #20)
25 metres per spool