Ice Dub is one of the best dubbing materials when it comes to shiny materials for nymphs. With this new kind of Ice Dub, the "Creepy Crawley", you now have a more chunky version with thicker fibers and a kinky pattern. Besides adding more volume to your flies, the fibers create really nixe crawley legs that pulsate and shine underwater.
In addition to a great material for nymphs, you can tie simple and effective base layers for any streamer or salmon / sea trout pattern or even for bug patterns, since it doesn't soak any water. The best way to work it into a fly is by dubbing loop or split thread technique. For maxumim spiky effects, use a dubbing brush at the end.