What does it mean if a suit jacket is fused?
Suit coats have a layer of cloth between the outer fabric and the inner silk lining that helps give the jacket its shape. On higher quality jackets this layer of cloth is a floating canvas shell made of horsehair combined with other materials. On lower quality jackets the canvas is replaced with much cheaper fusing. Fusing is a synthetic material that essentially turns to glue when heated. Because the fabric is glued together the jacket will not drape as elegantly as one with a canvas shell. A bigger problem with fusing is the potentially disastrous effect of dry cleaning on the jacket. If you have ever seen someone wearing a jacket where the fabric looked "bubbled," then you have witnessed the unwelcome result of dry cleaning on a fused coat.