traditional covered spandex 20d with polyester 150 for socks by twisting OK for tailor-making This is Nevin from ... , 40D, 70D, 140D, 280D, 420D, 560D, 840D, 1120D, 1680D. Our regular ACY yarns are mainly 40D or 70D spandex with polyester ... and regards, traditional covered spandex 20d with polyester 150 for socks by twisting