Botter IJsselmuiden Oslo is really quality yarn. The composition of 20% wool, 60% acrylic and 20% polyamide provide a very soft yarn. Thanks to this composition itch it, it breathes well and is durable yarn. Botter IJsselmuiden Oslo can be used as a sock, but is also very suitable for delicious warm sweaters, scarves or mittens. 1 ball = 1 sock. Botter IJsselmuiden Oslo is machine washable at 30 degrees.