Oxford wool Katia is a color effects, of medium thickness, very soft and cozy, perfect for everyone, men, women, children and elderly. Composition 50% Wool, 45% Acrylic and 5% Nylon. Ball weight 50 grams and 125 meters. Worked with needles of 3.5 / 4 mm. 40grados washable. For a size 42 jersey it takes about 10 balls.