Lightweight interfecing is a delicate interlining to add some stability for small areas of lightweight garments such as cotton or polyester blouses and dresses. Iron-on with cool too moderate iron, pressing carefully for 12-15 seconds.
Medium/light weight interlining for strengthening small areas of clothing, such as button backing strips, collars and cuffs and also for craftwork using fabrics. Suitable for use with lightweight fabrics such as cotton. Iron-on with moderate to hot iron, pressing firmly for 5-10 seconds. Using a damp cloth between the fabric and the iron will allow use of a higher temperature without damaging more delicate fabrics. 
Heavy/firm interlining for providing structure to small areas of garments such as cuffs, collars and belts and for craftwork using fabrics. Suitable for use with lightweight fabrics such as cotton. Iron-on with moderate to hot iron, pressing firmly for 5-10 seconds. Using a damp cloth between the fabric and the iron will allow use of a higher temperature without damaging more delicate fabrics.