This is a synthetic type of yarn that is stretchy and has long continuous fibers. You won't find a better egg pattern yarn and it also works nicely for sculpted head or body patterns that might use wool.
Long fluorescent fibers for streamers or baitfish. You can also use Fluoro fibers to add lateral lines, tailing material or just spice up your streamers. Very fine, high movement qualities when in the water.
It's also great for tails and legs on nymphs, such as the popular Ju-Ju patterns from Charlie Craven
When we look closely at insects and invertebrates they are not just one colour but a range of mixed colors across their body. So why do we often use single color dubbing to imitate nature? That was the big question the Semperfli Pro Team was asking. As a result we developed Dirty Bug Yarn which is part of our Dirty Bug Yarn fly tying range. We call it Dirty Bug Yarn because it has the multiple colors found on insects and invertebrates, whether you are tying shrimps, baetis nymphs, caddis nymphs it does not matter. We decided to blend multiple color materials into Dirty Bug Yarn creating a 2 ply yarn so that you can tie larger nymphs or split the 2 ply yarn for smaller flies.