If you knew fly tying material guru Jack Mickievicz, this material needs no introduction. Poly X is very similar to Zelon with a very reflective shine, crinkly texture and just the right amount of stiffness to hold its shape. I use this for my “Little Yellow Stone”, Thorax Dun wing posts, mayfly spinner wings, spent caddis, shucks on emergers and other fly patterns. I have purchased all the remaining inventory of this great material and offer it in Jack’s original shades plus some new colors I have dyed. This is not sold carded to prevent those annoying kinks!