Interfacing & interlining are applied to the inside of fabric, to add stability & structure, They are good for dressmaking and craft projects.

Interfacing can either come as iron-on (fusible) or sew-in. These can be further divided by weave (non-woven, woven and knit), and weights (light, medium and heavy weight). It is important to choose the correct type of interfacing for your dressmaking or crafting; if you are using a pattern, they will normally indicate if interfacing is required and what type you need.