Interfacing comes in different weights and can be used in a variety of ways to create structure and reinforcement. In dressmaking it is used for collars, cuffs and plackets. use the weight matching the weight of your fabric. Use firm, heavier weight interfacing for bags and projects requiring more structure.
All interfacing listed is fusible. Please choose what weight you want from the drop down menu. The shiny or rough side is the adhesive side that should be placed against your fabric. Make sure you use an cloth between your iron and the interfacing otherwise it will melt to you iron and leave a nasty mess!