Twist:100-1800TPM, Denier:40D-300D Used for Spinning, twisting, warping, weaving, knitting ITY has excellent performance and flexibility perspiration absorption heat performance, is the preferred material of thermal underwear.We have specifications below:42D/32F,60D/48F,80D/48F,135D/72F,135D/108F,160D/72F,300D/96FIf you need twisting,we can do as your requorements. 135D/108F Polyester BSY/ITY