Superior Threads - Polyarn #110 Dark Brown 8,500 Yds Jumbo Cone "Woollie-Like" Textured Polyester Polyarn is a Tex 26 Textured Polyester (DTY). Strength = 880 gf. Elongation = 28% 8,500yd cone Polyarn is colorfast and can be laundered commercially without fading. Polyarn is resistant to chlorine which makes it the best choice for childrens clothing as well as swimming and active wear. Polyarn is meant for sergers/overlock machines.