A fabric made of loose, haphazardly arranged wool fibers, which have surface scales that stick to each other as a result of the felt-making process. By the felting process a firm fabric is produced from the matting and adherence of a mass of fibres lying indiscriminately in all directions by mechanical processes such as pressure, moisture, pounding. This process includes disarranging the wool fibers, placing them in a thick layer, and then subjecting them to moisture and extensive friction over several hours, causing the fibers to shrink and mat together. In Central Asia, nomadic peoples live in circular tents called yurts, whose roofs and walls are covered in felt.