Historically, clothing is and has been made from many materials. These materials range from grasses to furs to much more elaborate and exotic materials. Some cultures, such as the various people of the Arctic Circle, until recently, made their clothing entirely of prepared and decorated furs and skins. Other cultures have supplemented and replaced leather and skins with cloth. Cloth is either woven or knitted and can be made from a large variety of fibers, which in turn can be natural, cellulose, or synthetic.