The tensile toughness of about 3000 psi is a standard specification parameter with the technical parameters for one-covered spandex yarns; this guarantees suitable energy but retains overall flexibility as well as a soft hand come to feel. Superior Tensile Toughness: I-cording noticeably improves yarn’s tensile toughness, occasionally surpassing 5000 psi https://rubber-covered-yarn33108.eedblog.com/31778734/the-5-second-trick-for-covered-spandex-yarn