Marathon 3.5 of Katia is a fine wool with a wide range of colors. It can be machine washed up to 30 °. It not recommended tumble dry. Composition: 75% acrylic and 25% wool. Clew weight 50 grams and 125 meters. Needle size 3.5 mm. You can knit a long sleeve sweater, size 42, with 10 balls.