Eggstasy is a revolutionary new fly-tying material for egg-flies. Unlike standard egg-yarn, which involves spinning yarn, Eggstasy is built on a core which means you can simply tie it like chenille. Eggstasy is the first material to be made from new " Next Generation" ( NX-Gen Fiber.) This material is a game-changer synthetic. NX-Gen Fibers are micro thin and designed to trap water, creating a slush-like texture when wet. Available in a variety of colors. Made in the UK.