Polyester/Viscose core spun yarn,21s RW Polyester+Viscose+40D Lycra 3.3 times drafted 61.9% RW Polyester+33.3% Viscose+4.8% Lycra Technics:Siro Core Spun; Weight CV%:1.4%; Weight tolerance:±1.0%; Strength:26.4cn/tex; Elongation:13.6%;