Flybox Eggstasy Nano Yarn - Eggstasy Nano is the latest addition to the Eggstasy range of materials. It’s is exactly the same as standard Eggstasy but in a tiny 0.8mm fibre size, making it the most versatile version of this material yet. It can be used for almost any type of trout fly – use it for hotspots, throats, butts, bodies and even legs on flexi patterns.