Istex

Weight: Worsted/Aran
Meterage: 100 meters (109 yards)
Unit weight: 50 grams (1.76 ounces)
Gauge: 18.0 sts = 4 inches
Needle size: 4 - 5mm (US 6 - 8 )
Fibers: 100% Wool - Icelandic

Weight: Bulky
Meterage: 100 meters (109 yards)
Unit weight: 100 grams (3.53 ounces)
Gauge: 13.0 sts = 4 inches
Needle size: 5.5 - 6.5mm (US 9 - 10½)
Fibers: 100% Icelandic Wool