Each ball weighs 50 grams and has 115 meters. This is a heavy weight yarn and we recommend using size 9-10 (U.S.)/(5.5-6 mm) knitting needles and size H8-J10 (U.S.)/(5-6 mm) crochet hook. To make a 4x4” tension square work 13 sts and 19 rows. Machine washable up to 30º. Do not tumble dry.