Wet wool takes days to dry because it is a thick type of material that absorbs water. Despite its long drying time, proper storage of wool clothing dictates that it is hung dry in order to preserve its shape.
Since wool absorbs moisture, it becomes heavy when wet. If hung to dry, the weight of the water distorts the shape of an article of wool clothing. The best way to preserve wool is to lay it on a flat surface to dry. Despite its maintenance, wool has historically been a popular choice of clothing in the winter because of its warmth.