Each ball weighs 100 grams and has 180 meters. This is a medium weight yarn and we recommend using size 7-8 (U.S.)/(4-5 mm) knitting needles. 6 balls of yarn are required to make a size 12 woman’s long sleeve jumper. To make a 4x4” tension square work 17 sts and 21 rows. Machine wash up to 30ºC. Do not tumble dry.