There are many kinds of silk. But the real silk is that which is naturally spun by the silkworm. However, the artificially manufactured silk is also available nowadays. Men are not under ban to use it. But there are certain varieties of such cloth which are used only by women. These are forbidden to men. Besides, they are disallowed to sit on a silk cloth. Similarly, quilts, mattresses and pillows should not be made from it because both men and women use them.