Water tank: It contains a tank that is filled with water, and this water is heated to produce steam. The tank may have a set capacity and require it to be refilled with water when needed., Steam: The water in the tank is heated until it turns into steam. Steam is released from the nozzle or tip of the iron and is used to smooth and iron fabrics., Applicable fabrics: The steam iron is usually used for ironable fabrics, such as cotton, silk, wool, polyester, etc. You must read the instructions for use of the iron to know the suitable fabrics and on which you should avoid using the iron., Settings and Features: Garment steamers may have multiple heat and steam settings to adjust performance according to fabric type and degree of wrinkle. Some irons may also include additional settings such as water spray or cleaning functions.