The tensile power of about 3000 psi is a standard specification parameter with the specialized parameters for one-covered spandex yarns; this ensures suitable strength but retains overall flexibility and a comfortable hand feel. Elasticity，sturdiness，breathability，flexibility，shape retention，very good dyeability，light-weight Warmth sensitivity: Spandex is usually weakened by sup... https://covered-elastic-yarn39382.suomiblog.com/little-known-facts-about-covered-spandex-yarn-47506798