85% Merino Wool, 10% Silk, 5% Cashmere Country of origin: Italy Suggested US tool size METRIC tool size UK tool size CROCHET tool size US 5 to 7 Knits to 21-24 stitches over 4in Kathmandu DK 100 is produced in Italy and is comprised of the finest 19.5 micron merino wool from South America, Mulberry silk from China and Mongolian cashmere. It is mulesing-free and prepared under the strictest ethical guidelines.