Katia Merino Sport is a classic very soft superwash merino wool 100%. Can Machine washable up to 30 °, tumble dry and low iron. Composition 100% Wool Superwash Merino. Each ball is 50 grams or 80 meters long. It can be knit with knitting needles 5-5.5 mm With 12 balls of size 42 sweater is knit.