Cascade Heritage Silk Yarn #5603 Marine Blue 85% Merino Superwash Wool, 15% Mulberry Silk Gauge: US 1-3 / 7.5-8= 1" 100gr (3.5 oz) / 437yds (400 m) Care: Machine Wash Warm Gentle /Tumble Dry Low Heat IDEAL for the standard gauge knitting machine.