HiKoo CoBaSi Plus (027 Nile Blue) CoBaSi Yarn: Worsted weight, 55% Cotton Yarn, 21% Nylon / Polyamide, 16% Rayon from Bamboo, 8% Silk Needle size: US 6 - 7 or 4 - 4.5mm Gauge: 5.0 sts = 1 inch Wt / Yardage: 177 yards(162 meters) Texture / Care: Plied, Machine Washable, Made In Taiwan