Each ball weighs 50 grams and has 125 meters. This is a fine weight yarn and we recommend using size 2 - 3 (U.S.)/(2.5 - 3 mm) knitting needles and size B1 (U.S.)/(2 mm) crochet hook. 8 balls of yarn are required to make a size 12 woman’s short sleeved jumper. To make a 4x4” tension square work 26 sts and 36 rows. Machine washable up to 30º. Do not tumble dry.