Interfacing is essentially an extra layer of fabric that helps provide shape and support in detail areas.  Is commonly used in cuffs, lapels, necklines, pockets, waistbands, buttonholes, facings and opening edges.

Interfacing acts to keep these areas of your garment crisp throughout repeated washing and wearing.

Your pattern will tell you if you require interfacing and how much you will need.

Interfacing is applied to the wrong side of the fabric.

Size:  90 cm x 45 cm. this is plenty to use on cuffs and collars facings etc.