Most raincoats are made from waterproof fabrics such as polyester, nylon. Getting drenched is itself a messy affair and no one likes to add on to it by being damp inside also from sweat. These fabrics are breathable which allow air to pass through and thus allowing the sweat vapor to escape. Raincoats are heavily preferred by motorists to ensure protection from the strong showers and gushing wind while riding. Raincoats can protect your body from monsoon illness by offering protection against cold water and breeze.