Textreme Floss (210 denier)

Textreme uses the term "floss" technically here, as this is a twisted multifilament thread, but don't think of this stuff as being like the old Rayon flosses. This is really a nice strong tying thread in 210 denier that can be used to tie medium to large flies, and is especially useful on flies where being able to flatten the thread out to make a smooth body might be useful, making it a good replacement for UTC thread.  You can also use it as a ribbing on smaller nymphs like the Soft Hackle Carrot, or as a silk substitute on smaller thread bodied flies like soft hackles.