Cotton cloth is more comfortable to wear. Cashmere is of course the warmest. Modal's raw materials are all natural materials, which are harmless to human body, can be decomposed naturally and are harmless to the environment. Modal fiber is a kind of cellulose fiber, which is made from European shrubs. It is made of wood pulp through a special spinning process, so it belongs to cellulose fiber like cotton and is a pure natural fiber. Of course it's cashmere, if the landlord wants to be warm. If comfort is important, choose cotton or modal.