A strong, stretchy, continuous filament yarn which is dyed using colorfast dyes preventing it from fading. The easiest yarn to tie, cut & trip for eggs, sculpted patters like sculpins, and woolheads. It is spongier and more compact than standard egg yarn making it great for smaller egg flies. The clown pack has all the colors needed for the clown egg. Also a great assortment pack for someone tying a variety of colors.