Each ball weighs 150 grams and has 410 meters. This is a very fine yarn and we recommend using size 3 (U.S.)/(3 mm) double pointed needles for socks. To make a pair of size 9-10.5 (U.S.)/(42-44 eur) adult socks you need 1 ball of yarn. To make a 4x4” tension square work 24 sts and 36 rows. Machine wash up to 40ºC. Do not tumble dry.